How to add "node add form" as context

When creating a new page variant with Drupal 7, I was able to add the "node add form" as a context. This allowed me (in the content tab op the variant) to add fields for the user to fill in, together with other page elements like views, custom nodes etc...

Now that i am using Drupal 8 for another website however, I don't know how to do that anymore. I see lots and lots of possible contexts to add, but not the node add form. I thought it might be the "Entity form display" I should use, but then I am being asked to select an entity. I have tried to enter the name of the content type (human name as well as machine_name), but that doesn't work.

What am I doing wrong? How can I add specific fields of a node add form to a page? I can't believe this would not be possible in Drupal 8. It's probably something silly I am overlooking right now...