Issue:
I wish to display a list of three specific content types on my documents library for when the user wishes to create a new document, however configuring the library settings of my Document Library I see that the desired content types are listed only when a user
selects [File > New Document], and not when they select New from the [[New], [Upload], [Sync], [Share]] menu.
Configuration:
To configure the document library settings I: navigated to the Document Library > Library Settings > Site Content Types > [set only the three specific content types to be visible on New Button].
I feel I'm doing something wrong.