Hey, I'm looking for the same thing, have you found anything?

it looks like we have the same requirements.. have you found anything?

@Aishwarya Theva 
Have you found anything?

Anyone been able to find this?  Been looking for it as well.

Probably a bit late to the party, but in case anyone finds this like I did: you might want to look at the UI Page called "content_type_selection" in the Content Publishing scope. This page makes use of the "$streamline_content_authoring" page under difference circumstances, but how (if at all) you can customize it, remains a mistery to me for now.

Perhaps someone more knowledgeable comes across this post and fills in the blanks 🙂