Injecting custom field into the GeneratePress archive loop?

This is really a part 2 to this post: https://generatepress.com/forums/topic/question-on-a-mysterious-discovery/

So, I have Custom Post Types that are looped in a category archive page but only the "Title" and "Featured Image" of the post.

Is it possible to add other fields that are associated with the Custom Posts?

Is there a way to include those into the loop per post?

Thanks