diff --git a/core/config/schema/core.data_types.schema.yml b/core/config/schema/core.data_types.schema.yml
index b28eb75..3e2d785 100644
--- a/core/config/schema/core.data_types.schema.yml
+++ b/core/config/schema/core.data_types.schema.yml
@@ -378,12 +378,16 @@ field_config_base:
       type: boolean
       label: 'Translatable'
     default_value:
-      type: field.[%parent.field_type].value
+      type: sequence
+      label: 'Default values'
+      sequence:
+        - type: field.value.[%parent.%parent.field_type]
+          label: 'Default value'
     default_value_callback:
       type: string
       label: 'Default value callback'
     settings:
-      type: field.[%parent.field_type].field_settings
+      type: field.field_settings.[%parent.field_type]
     third_party_settings:
       type: sequence
       label: 'Third party settings'
@@ -417,9 +421,23 @@ core.date_format.*:
       type: string
       label: 'Default language'
 
+# Generic field settings schemas.
+
+field.storage_settings.*:
+  type: mapping
+  label: 'Settings'
+
+field.field_settings.*:
+  type: mapping
+  label: 'Settings'
+
+field.value.*:
+  type: mapping
+  label: 'Default value'
+
 # Schema for the configuration of the String field type.
 
-field.string.storage_settings:
+field.storage_settings.string:
   type: mapping
   label: 'String settings'
   mapping:
@@ -427,45 +445,39 @@ field.string.storage_settings:
       type: integer
       label: 'Maximum length'
 
-field.string.field_settings:
-  type: sequence
+field.field_settings.string:
+  type: mapping
   label: 'String settings'
 
-field.string.value:
-  type: sequence
+field.value.string:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: string
-          label: 'Value'
+  mapping:
+    value:
+      type: string
+      label: 'Value'
 
 # Schema for the configuration of the  String (long) field type.
 
-field.string_long.storage_settings:
-  type: field.string.storage_settings
+field.storage_settings.string_long:
+  type: field.storage_settings.string
   label: 'String (long) settings'
 
-field.string_long.field_settings:
-  type: field.string.field_settings
+field.field_settings.string_long:
+  type: field.field_settings.string
   label: 'String (long) settings'
 
-field.string_long.value:
-  type: sequence
+field.value.string_long:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: text
-          label: 'Value'
+  mapping:
+    value:
+      type: text
+      label: 'Value'
 
 # Schema for the configuration of the URI field type.
 
-field.uri.storage_settings:
+field.storage_settings.uri:
   type: mapping
   label: 'URI settings'
   mapping:
@@ -473,66 +485,57 @@ field.uri.storage_settings:
       type: integer
       label: 'Maximum length'
 
-field.uri.field_settings:
-  type: sequence
+field.field_settings.uri:
+  type: mapping
   label: 'URI settings'
 
-field.uri.value:
-  type: sequence
+field.value.uri:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: string
-          label: 'Value'
+  mapping:
+    value:
+      type: string
+      label: 'Value'
 
 # Schema for the configuration of the Created field type.
 
-field.created.storage_settings:
-  type: sequence
+field.storage_settings.created:
+  type: mapping
   label: 'Created timestamp settings'
 
-field.created.field_settings:
-  type: sequence
+field.field_settings.created:
+  type: mapping
   label: 'Created timestamp settings'
 
-field.created.value:
-  type: sequence
+field.value.created:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: integer
-          label: 'Value'
+  mapping:
+    value:
+      type: integer
+      label: 'Value'
 
 # Schema for the configuration of the Changed field type.
 
-field.changed.storage_settings:
-  type: sequence
+field.storage_settings.changed:
+  type: mapping
   label: 'Changed timestamp settings'
 
-field.changed.field_settings:
-  type: sequence
+field.field_settings.changed:
+  type: mapping
   label: 'Changed timestamp settings'
 
-field.changed.value:
-  type: sequence
+field.value.changed:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: integer
-          label: 'Value'
+  mapping:
+    value:
+      type: integer
+      label: 'Value'
 
 # Schema for the configuration of the Entity reference field type.
 
-field.entity_reference.storage_settings:
+field.storage_settings.entity_reference:
   type: mapping
   label: 'Entity reference settings'
   mapping:
@@ -540,7 +543,7 @@ field.entity_reference.storage_settings:
       type: string
       label: 'Type of item to reference'
 
-field.entity_reference.field_settings:
+field.field_settings.entity_reference:
   type: mapping
   label: 'Entity reference settings'
   mapping:
@@ -551,23 +554,20 @@ field.entity_reference.field_settings:
       type: entity_reference.[%parent.handler].handler_settings
       label: 'Reference method settings'
 
-field.entity_reference.value:
-  type: sequence
+field.value.entity_reference:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        target_id:
-          type: string
-          label: 'Value'
-        target_uuid:
-          type: string
-          label: 'Target UUID'
+  mapping:
+    target_id:
+      type: string
+      label: 'Value'
+    target_uuid:
+      type: string
+      label: 'Target UUID'
 
 # Schema for the configuration of the Boolean field type.
 
-field.boolean.storage_settings:
+field.storage_settings.boolean:
   type: mapping
   label: 'Boolean settings'
   mapping:
@@ -578,50 +578,41 @@ field.boolean.storage_settings:
       type: string
       label: 'Off label'
 
-field.boolean.field_settings:
+field.field_settings.boolean:
   label: 'Boolean settings'
-  type: sequence
+  type: mapping
 
-field.boolean.value:
-  type: sequence
-  label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: integer
-          label: 'Value'
+field.value.boolean:
+  type: mapping
+  mapping:
+    value:
+      type: integer
+      label: 'Value'
 
 # Schema for the configuration of the Email field type.
 
-field.email.storage_settings:
-  type: sequence
+field.storage_settings.email:
+  type: mapping
   label: 'Email settings'
-  sequence:
-    - type: string
 
-field.email.field_settings:
-  type: sequence
+field.field_settings.email:
+  type: mapping
   label: 'Email settings'
   sequence:
     - type: string
       label: 'Setting'
 
-field.email.value:
-  type: sequence
+field.value.email:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: email
-          label: 'Value'
+  mapping:
+    value:
+      type: email
+      label: 'Value'
 
 # Schema for the configuration of the Integer field type.
 
-field.integer.storage_settings:
+field.storage_settings.integer:
   type: mapping
   label: 'Integer settings'
   mapping:
@@ -632,7 +623,7 @@ field.integer.storage_settings:
       type: string
       label: 'Database storage size'
 
-field.integer.field_settings:
+field.field_settings.integer:
   type: mapping
   label: 'Integer'
   mapping:
@@ -649,20 +640,17 @@ field.integer.field_settings:
       type: string
       label: 'Suffix'
 
-field.integer.value:
-  type: sequence
+field.value.integer:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default value'
-      mapping:
-        value:
-          type: integer
-          label: 'Value'
+  mapping:
+    value:
+      type: integer
+      label: 'Value'
 
 # Schema for the configuration of the Decimal field type.
 
-field.decimal.storage_settings:
+field.storage_settings.decimal:
   type: mapping
   label: 'Decimal settings'
   mapping:
@@ -673,9 +661,9 @@ field.decimal.storage_settings:
       type: integer
       label: 'Scale'
 
-field.decimal.field_settings:
+field.field_settings.decimal:
   type: mapping
-  label: 'Decimal'
+  label: 'Decimal settings'
   mapping:
     min:
       type: float
@@ -690,29 +678,23 @@ field.decimal.field_settings:
       type: string
       label: 'Suffix'
 
-field.decimal.value:
-   type: sequence
+field.value.decimal:
+   type: mapping
    label: 'Default value'
-   sequence:
-     - type: mapping
-       label: 'Default value'
-       mapping:
-         value:
-           type: float
-           label: 'Value'
+   mapping:
+     value:
+       type: float
+       label: 'Value'
 
 # Schema for the configuration of the Float field type.
 
-field.float.storage_settings:
-  type: sequence
+field.storage_settings.float:
+  type: mapping
   label: 'Float settings'
-  sequence:
-    - type: string
-      label: 'setting'
 
-field.float.field_settings:
+field.field_settings.float:
   type: mapping
-  label: 'Float'
+  label: 'Float settings'
   mapping:
     min:
       type: float
@@ -727,13 +709,10 @@ field.float.field_settings:
       type: string
       label: 'Suffix'
 
-field.float.value:
-  type: sequence
+field.value.float:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default value'
-      mapping:
-        value:
-          type: float
-          label: 'Value'
+  mapping:
+    value:
+      type: float
+      label: 'Value'
diff --git a/core/lib/Drupal/Core/Field/Entity/BaseFieldOverride.php b/core/lib/Drupal/Core/Field/Entity/BaseFieldOverride.php
index 9fbe75c..b6b2a3c 100644
--- a/core/lib/Drupal/Core/Field/Entity/BaseFieldOverride.php
+++ b/core/lib/Drupal/Core/Field/Entity/BaseFieldOverride.php
@@ -154,8 +154,12 @@ protected function getBaseFieldDefinition() {
    *   BaseFieldOverride::allowBundleRename() has not been called.
    */
   public function preSave(EntityStorageInterface $storage) {
-    // Set the default instance settings.
-    $this->settings += \Drupal::service('plugin.manager.field.field_type')->getDefaultFieldSettings($this->getType());
+    // Filter out unknown settings and make sure all settings are present, so
+    // that a complete field definition is passed to the various hooks and
+    // written to config.
+    $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
+    $default_settings = $field_type_manager->getDefaultFieldSettings($this->getType());
+    $this->settings = array_intersect_key($this->settings, $default_settings) + $default_settings;
 
     // Call the parent's presave method to perform validate and calculate
     // dependencies.
diff --git a/core/modules/comment/config/schema/comment.schema.yml b/core/modules/comment/config/schema/comment.schema.yml
index 8b8c6a3..ee16820 100644
--- a/core/modules/comment/config/schema/comment.schema.yml
+++ b/core/modules/comment/config/schema/comment.schema.yml
@@ -56,40 +56,38 @@ comment.type.*:
       type: text
       label: 'Description'
 
-field.comment.storage_settings:
-  type: sequence
-  label: 'Settings'
-  sequence:
-    - type: string
-      label: 'Setting'
+field.storage_settings.comment:
+  type: mapping
+  label: 'Comment settings'
+  mapping:
+    comment_type:
+      label: 'Comment type'
+      type: string
 
-field.comment.value:
-  type: sequence
-  label: 'Settings'
-  sequence:
-    - type: mapping
-      label: 'Settings'
-      mapping:
-        status:
-          type: integer
-          label: 'Status'
-        cid:
-          type: integer
-          label: 'Status'
-        last_comment_timestamp:
-          type: integer
-          label: 'Last comment timestamp'
-        last_comment_name:
-          type: integer
-          label: 'Name'
-        last_comment_uid:
-          type: integer
-          label: 'UID'
-        comment_count:
-          type: integer
-          label: 'Count'
+field.value.comment:
+  type: mapping
+  label: 'Default value'
+  mapping:
+    status:
+      type: integer
+      label: 'Comment status'
+    cid:
+      type: integer
+      label: 'Last comment ID'
+    last_comment_timestamp:
+      type: integer
+      label: 'Last comment timestamp'
+    last_comment_name:
+      type: integer
+      label: 'Last comment name'
+    last_comment_uid:
+      type: integer
+      label: 'Last comment user ID'
+    comment_count:
+      type: integer
+      label: 'Number of comments'
 
-field.comment.field_settings:
+field.field_settings.comment:
   type: mapping
   label: 'Comment settings'
   mapping:
diff --git a/core/modules/datetime/config/schema/datetime.schema.yml b/core/modules/datetime/config/schema/datetime.schema.yml
index 3086164..8e76e48 100644
--- a/core/modules/datetime/config/schema/datetime.schema.yml
+++ b/core/modules/datetime/config/schema/datetime.schema.yml
@@ -1,6 +1,6 @@
 # Schema for the configuration files of the Datetime module.
 
-field.datetime.storage_settings:
+field.storage_settings.datetime:
   type: mapping
   label: 'Datetime settings'
   mapping:
@@ -8,23 +8,20 @@ field.datetime.storage_settings:
       type: string
       label: 'Date type'
 
-field.datetime.field_settings:
-  type: sequence
-  label: 'Settings'
-  sequence:
-    - type: string
+field.field_settings.datetime:
+  type: mapping
+  label: 'Datetime settings'
 
-field.datetime.value:
-  type: sequence
+field.value.datetime:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: sequence
-      label: 'Default value'
-      sequence:
-        - type: string
-          label: 'Type'
-        - type: string
-          label: 'Value'
+  mapping:
+    default_date_type:
+      type: string
+      label: 'Default date type'
+    default_date:
+      type: string
+      label: 'Default date value'
 
 entity_view_display.field.datetime_default:
   type: entity_field_view_display_base
diff --git a/core/modules/field/config/schema/field.schema.yml b/core/modules/field/config/schema/field.schema.yml
index 184dc2f..429c929 100644
--- a/core/modules/field/config/schema/field.schema.yml
+++ b/core/modules/field/config/schema/field.schema.yml
@@ -25,7 +25,7 @@ field.storage.*.*:
       type: string
       label: 'Type'
     settings:
-      type: field.[%parent.type].storage_settings
+      type: field.storage_settings.[%parent.type]
     module:
       type: string
       label: 'Module'
diff --git a/core/modules/field/src/Entity/FieldConfig.php b/core/modules/field/src/Entity/FieldConfig.php
index 87f4400..a8d9c0a 100644
--- a/core/modules/field/src/Entity/FieldConfig.php
+++ b/core/modules/field/src/Entity/FieldConfig.php
@@ -138,9 +138,13 @@ public function preSave(EntityStorageInterface $storage) {
 
     $storage_definition = $this->getFieldStorageDefinition();
 
+    // Filter out unknown settings and make sure all settings are present, so
+    // that a complete field definition is passed to the various hooks and
+    // written to config.
+    $default_settings = $field_type_manager->getDefaultFieldSettings($storage_definition->type);
+    $this->settings = array_intersect_key($this->settings, $default_settings) + $default_settings;
+
     if ($this->isNew()) {
-      // Set the default field settings.
-      $this->settings += $field_type_manager->getDefaultFieldSettings($storage_definition->type);
       // Notify the entity storage.
       $entity_manager->getStorage($this->entity_type)->onFieldDefinitionCreate($this);
     }
@@ -155,8 +159,6 @@ public function preSave(EntityStorageInterface $storage) {
       if ($storage_definition->uuid() != $this->original->getFieldStorageDefinition()->uuid()) {
         throw new FieldException("Cannot change an existing field's storage.");
       }
-      // Set the default field settings.
-      $this->settings += $field_type_manager->getDefaultFieldSettings($storage_definition->type);
       // Notify the entity storage.
       $entity_manager->getStorage($this->entity_type)->onFieldDefinitionUpdate($this, $this->original);
     }
diff --git a/core/modules/field/src/Entity/FieldStorageConfig.php b/core/modules/field/src/Entity/FieldStorageConfig.php
index 6b89e38..9ae0fc4 100644
--- a/core/modules/field/src/Entity/FieldStorageConfig.php
+++ b/core/modules/field/src/Entity/FieldStorageConfig.php
@@ -253,6 +253,13 @@ public function preSave(EntityStorageInterface $storage) {
     // Clear the derived data about the field.
     unset($this->schema);
 
+    // Filter out unknown settings and make sure all settings are present, so
+    // that a complete field definition is passed to the various hooks and
+    // written to config.
+    $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
+    $default_settings = $field_type_manager->getDefaultStorageSettings($this->type);
+    $this->settings = array_intersect_key($this->settings, $default_settings) + $default_settings;
+
     if ($this->isNew()) {
       $this->preSaveNew($storage);
     }
@@ -303,10 +310,6 @@ protected function preSaveNew(EntityStorageInterface $storage) {
     }
     $this->module = $field_type['provider'];
 
-    // Make sure all settings are present, so that a complete field
-    // definition is passed to the various hooks and written to config.
-    $this->settings += $field_type_manager->getDefaultStorageSettings($this->type);
-
     // Notify the entity manager.
     $entity_manager->onFieldStorageDefinitionCreate($this);
   }
@@ -333,7 +336,6 @@ public function calculateDependencies() {
   protected function preSaveUpdated(EntityStorageInterface $storage) {
     $module_handler = \Drupal::moduleHandler();
     $entity_manager = \Drupal::entityManager();
-    $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
 
     // Some updates are always disallowed.
     if ($this->type != $this->original->type) {
@@ -343,10 +345,6 @@ protected function preSaveUpdated(EntityStorageInterface $storage) {
       throw new FieldException("Cannot change the entity type for an existing field storage.");
     }
 
-    // Make sure all settings are present, so that a complete field
-    // definition is passed to the various hooks and written to config.
-    $this->settings += $field_type_manager->getDefaultStorageSettings($this->type);
-
     // See if any module forbids the update by throwing an exception. This
     // invokes hook_field_storage_config_update_forbid().
     $module_handler->invokeAll('field_storage_config_update_forbid', array($this, $this->original));
diff --git a/core/modules/file/config/schema/file.schema.yml b/core/modules/file/config/schema/file.schema.yml
index 0babe38..7a007c5 100644
--- a/core/modules/file/config/schema/file.schema.yml
+++ b/core/modules/file/config/schema/file.schema.yml
@@ -22,7 +22,7 @@ file.settings:
           type: path
           label: 'Directory'
 
-field.file.storage_settings:
+field.storage_settings.file:
   type: base_entity_reference_field_settings
   label: 'File settings'
   mapping:
@@ -36,12 +36,9 @@ field.file.storage_settings:
       type: string
       label: 'Upload destination'
 
-field.file.value:
-  type: sequence
+field.value.file:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: string
-      label: 'Value'
 
 base_file_field_field_settings:
   type: mapping
@@ -59,7 +56,7 @@ base_file_field_field_settings:
       type: string
       label: 'Maximum upload size'
 
-field.file.field_settings:
+field.field_settings.file:
   type: base_file_field_field_settings
   label: 'File settings'
   mapping:
diff --git a/core/modules/image/config/schema/image.schema.yml b/core/modules/image/config/schema/image.schema.yml
index ef03075..0b09fcf 100644
--- a/core/modules/image/config/schema/image.schema.yml
+++ b/core/modules/image/config/schema/image.schema.yml
@@ -83,15 +83,15 @@ image.settings:
       type: boolean
       label: 'Suppress the itok query string for image derivatives'
 
-field.image.storage_settings:
-  type: field.file.storage_settings
+field.storage_settings.image:
+  type: field.storage_settings.file
   label: 'Image settings'
   mapping:
     default_image:
       type: field_default_image
       label: 'Default value'
 
-field.image.field_settings:
+field.field_settings.image:
   type: base_file_field_field_settings
   label: 'Image settings'
   mapping:
@@ -117,28 +117,9 @@ field.image.field_settings:
       type: field_default_image
       label: 'Default value'
 
-field.image.value:
-  type: sequence
+field.value.image:
+  type: field_default_image
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default image'
-      mapping:
-        fid:
-          type: integer
-          label: 'File ID'
-        alt:
-          type: string
-          label: 'Alternative text'
-        title:
-          type: string
-          label: 'Title text'
-        width:
-          type: integer
-          label: 'Width'
-        height:
-          type: integer
-          label: 'Height'
 
 entity_view_display.field.image:
   type: entity_field_view_display_base
diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/process/d6/FieldSettings.php b/core/modules/migrate_drupal/src/Plugin/migrate/process/d6/FieldSettings.php
index 58fc6ea..9b76cb2 100644
--- a/core/modules/migrate_drupal/src/Plugin/migrate/process/d6/FieldSettings.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/process/d6/FieldSettings.php
@@ -44,8 +44,6 @@ public function transform($value, MigrateExecutable $migrate_executable, Row $ro
    *   A valid array of settings.
    */
   public function getSettings($field_type, $global_settings, $widget_settings) {
-    $image_label = isset($widget_settings['alt']) ? $widget_settings['alt'] : '';
-    $title_label = isset($widget_settings['title']) ? $widget_settings['title'] : '';
     $max_length = isset($global_settings['max_length']) ? $global_settings['max_length'] : '';
     $max_length = empty($max_length) ? 255 : $max_length;
     if (isset($global_settings['allowed_values'])) {
@@ -74,12 +72,6 @@ public function getSettings($field_type, $global_settings, $widget_settings) {
       'text' => array(
         'max_length' => $max_length,
       ),
-      'image' => array(
-        'column_groups' => array(
-          'alt' => array('label' => $image_label),
-          'title' => array('label' => $title_label),
-        ),
-      ),
       'datetime' => array('datetime_type' => 'datetime'),
       'list_string' => array(
         'allowed_values' => $allowed_values,
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldTest.php
index f889acc..2f1c179 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldTest.php
@@ -70,8 +70,6 @@ public function testFields() {
     $field_storage = entity_load('field_storage_config', 'node.field_test_imagefield');
     $this->assertEqual($field_storage->type, "image",  t('Field type is @fieldtype. It should be image.', array('@fieldtype' => $field_storage->type)));
     $settings = $field_storage->getSettings();
-    $this->assertEqual($settings['column_groups']['alt']['label'], 'Test alt');
-    $this->assertEqual($settings['column_groups']['title']['label'], 'Test title');
     $this->assertEqual($settings['target_type'], 'file');
     $this->assertEqual($settings['uri_scheme'], 'public');
     $this->assertEqual($settings['default_image']['fid'], '');
diff --git a/core/modules/options/config/schema/options.schema.yml b/core/modules/options/config/schema/options.schema.yml
index f0d444a..903dccc 100644
--- a/core/modules/options/config/schema/options.schema.yml
+++ b/core/modules/options/config/schema/options.schema.yml
@@ -1,6 +1,6 @@
 # Schema for the configuration files of the Options module.
 
-field.list_integer.storage_settings:
+field.storage_settings.list_integer:
   type: mapping
   label: 'List (integer) settings'
   mapping:
@@ -21,23 +21,19 @@ field.list_integer.storage_settings:
       type: string
       label: 'Allowed values function'
 
-field.list_integer.field_settings:
-  label: 'List (integer)'
+field.field_settings.list_integer:
+  label: 'List (integer) settings'
   type: mapping
-  mapping: {  }
 
-field.list_integer.value:
-  type: sequence
+field.value.list_integer:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: integer
-          label: 'Value'
+  mapping:
+    value:
+      type: integer
+      label: 'Value'
 
-field.list_float.storage_settings:
+field.storage_settings.list_float:
   type: mapping
   label: 'List (float) settings'
   mapping:
@@ -58,23 +54,19 @@ field.list_float.storage_settings:
       type: string
       label: 'Allowed values function'
 
-field.list_float.field_settings:
-  label: 'List (float)'
+field.field_settings.list_float:
+  label: 'List (float) settings'
   type: mapping
-  mapping: {  }
 
-field.list_float.value:
-  type: sequence
+field.value.list_float:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: string
-          label: 'Value'
+  mapping:
+    value:
+      type: string
+      label: 'Value'
 
-field.list_string.storage_settings:
+field.storage_settings.list_string:
   type: mapping
   label: 'List (text) settings'
   mapping:
@@ -95,21 +87,17 @@ field.list_string.storage_settings:
       type: string
       label: 'Allowed values function'
 
-field.list_string.field_settings:
-  label: 'List (float)'
+field.field_settings.list_string:
+  label: 'List (text) settings'
   type: mapping
-  mapping: {  }
 
-field.list_string.value:
-  type: sequence
+field.value.list_string:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: string
-          label: 'Value'
+  mapping:
+    value:
+      type: string
+      label: 'Value'
 
 entity_view_display.field.list_default:
   type: entity_field_view_display_base
diff --git a/core/modules/taxonomy/config/schema/taxonomy.schema.yml b/core/modules/taxonomy/config/schema/taxonomy.schema.yml
index e9aed2b..c1a1f6b 100644
--- a/core/modules/taxonomy/config/schema/taxonomy.schema.yml
+++ b/core/modules/taxonomy/config/schema/taxonomy.schema.yml
@@ -39,7 +39,7 @@ taxonomy.vocabulary.*:
       sequence:
         - type: taxonomy.vocabulary.third_party.[%key]
 
-field.taxonomy_term_reference.storage_settings:
+field.storage_settings.taxonomy_term_reference:
   type: base_entity_reference_field_settings
   label: 'Taxonomy term reference settings'
   mapping:
@@ -60,7 +60,7 @@ field.taxonomy_term_reference.storage_settings:
               type: integer
               value: 'Parent'
 
-field.taxonomy_term_reference.field_settings:
+field.field_settings.taxonomy_term_reference:
   type: mapping
   label: 'Taxonomy term reference settings'
   mapping:
@@ -68,16 +68,13 @@ field.taxonomy_term_reference.field_settings:
       type: string
       label: 'Reference method'
 
-field.taxonomy_term_reference.value:
-  type: sequence
-  label: 'Default values'
-  sequence:
-    - type: mapping
-      label: 'Default value'
-      mapping:
-        target_id:
-          type: integer
-          label: 'Term ID'
+field.value.taxonomy_term_reference:
+  type: mapping
+  label: 'Default value'
+  mapping:
+    target_id:
+      type: integer
+      label: 'Term ID'
 
 entity_view_display.field.entity_reference_rss_category:
   type: entity_field_view_display_base
diff --git a/core/modules/text/config/schema/text.schema.yml b/core/modules/text/config/schema/text.schema.yml
index f211cbf..b1b5f45 100644
--- a/core/modules/text/config/schema/text.schema.yml
+++ b/core/modules/text/config/schema/text.schema.yml
@@ -8,7 +8,7 @@ text.settings:
       type: integer
       label: 'Default summary length'
 
-field.text.storage_settings:
+field.storage_settings.text:
   type: mapping
   label: 'Text (formatted) settings'
   mapping:
@@ -16,56 +16,45 @@ field.text.storage_settings:
       type: integer
       label: 'Maximum length'
 
-field.text.field_settings:
+field.field_settings.text:
   type: mapping
   label: 'Text (formatted) settings'
-  sequence:
-    - type: string
 
-field.text.value:
-  type: sequence
+field.value.text:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: label
-          label: 'Value'
-        format:
-          type: string
-          label: 'Text format'
-
-field.text_long.storage_settings:
+  mapping:
+    value:
+      type: label
+      label: 'Value'
+    format:
+      type: string
+      label: 'Text format'
+
+field.storage_settings.text_long:
   label: 'Text (formatted, long) settings'
   type: mapping
-  mapping: {  }
 
-field.text_long.field_settings:
+field.field_settings.text_long:
   label: 'Text (formatted, long) settings'
   type: mapping
-  mapping: {  }
 
-field.text_long.value:
-  type: sequence
+field.value.text_long:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: text
-          label: 'Value'
-        format:
-          type: string
-          label: 'Text format'
-
-field.text_with_summary.storage_settings:
+  mapping:
+    value:
+      type: text
+      label: 'Value'
+    format:
+      type: string
+      label: 'Text format'
+
+field.storage_settings.text_with_summary:
   label: 'Text (formatted, long, with summary) settings'
   type: mapping
-  mapping: {  }
 
-field.text_with_summary.field_settings:
+field.field_settings.text_with_summary:
   type: mapping
   label: 'Text (formatted, long, with summary) settings'
   mapping:
@@ -73,22 +62,19 @@ field.text_with_summary.field_settings:
       type: boolean
       label: 'Summary input'
 
-field.text_with_summary.value:
-  type: sequence
+field.value.text_with_summary:
+  type: mapping
   label: 'Default value'
-  sequence:
-    - type: mapping
-      label: 'Default'
-      mapping:
-        value:
-          type: text
-          label: 'Body'
-        summary:
-          type: string
-          label: 'Summary'
-        format:
-          type: string
-          label: 'Text format'
+  mapping:
+    value:
+      type: text
+      label: 'Body'
+    summary:
+      type: string
+      label: 'Summary'
+    format:
+      type: string
+      label: 'Text format'
 
 entity_view_display.field.text_default:
   type: entity_field_view_display_base