Yes, it is possible to control who can add featured images to WordPress content. This tutorial will show you how it's done.| PublishPress
Do you write posts for clients and need get them approved by those clients? This is possible in WordPress with the PublishPress plugins.| PublishPress
Unless you want to write code, there are limited options for re-ordering Gutenberg metaboxes. You can rearrange the default metaboxes.| PublishPress