Set as an author a user with a role that doesn’t allow to publish a CPT

Hi!

I’ve created a custom post type ‘map’ on a website and a custom role ‘Cartographer’ to manage this CPT. The Cartographer users can create and edit maps but they cannot publish them. When they create a map it is sent to review and then an administrator publishes it.
If the administrator doesn’t change the author, the name of the Cartographer is set as the author of the map, but if the administrator wants to add another Cartographer user as a co-author, the name doesn’t appear on the list. Also, if the administrator changes the author to another user and then tries to go back to the original author, who is a Cartographer, the name is not listed either. I guess this is because the Cartographer role doesn’t have the capability of publishing maps. Or am I wrong? Is there any way to achieve what I want?

Thank you in advance, this is a great plugin.

Regards!