entity_display_modes_listing
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This module provides the functionality for displaying all entity form/display modes as additional operation links.
When the user is on the /admin/structure/types page, we can see the full list of available content types.
If we click the arrow next to the content type operation links, we can see the full list of operation links (eg, Manage Fields, Manage Form Display, Manage Display...).
If a certain content type has more than one active display mode, we can list them in the action links instead of going to the default display mode, and then use the tab navigation to access the desired display mode.