queue_order 8.x-1.0-rc3

Support weight value definition in QueueWorker annotation.

/**
 * Process a queue of media items to fetch their thumbnails.
 *
 * @QueueWorker(
 *   id = "custom_media_entity_thumbnail",
 *   title = @Translation("Custom thumbnail downloader"),
 *   cron = {
 *     "time" = 60,
 *     "weight" = -10,
 *   }
 * )
 */
class CustomThumbnailDownloader extends ThumbnailDownloader {}

To override the default weight value use Queue Order UI module.