Hello, "name" and other columns are all Custom Fields. I use the "post_title" as a "placeholder" field (name + " - " + data) but honestly I only use it because it's mandatory.
There is no such feature available to group the posts but fortunately I'm thinking of workaround that should work for you.
If you can share admin access details. I would like to see your current structure or I can offer you sandbox site where you can create such structure with demo content and then I will try to offer you the workaround.
*** Please make a FULL BACKUP of your database and website.***
I would also eventually need to request temporary access (WP-Admin) to your site. Preferably to a test site where the problem has been replicated if possible in order to be of better help and check if some configurations might need to be changed.
I have set the next reply to private which means only you and I have access to it.
I see you have created multiple post-relationship using same post type.
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I take example of the post relationship "Donatori Donazioni".
I've created the following view "show-post-title-donatori" that will list the "Donatori" post:
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I've created another view "show-related-donazioni" that will show count of Donazioni posts using shortcode: [wpv-found-count] and this shortcode added to the following view's loop output section outside the view's loop and added the following post-relationship query filter.
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Filter by post relationship or repeatable fields group owner
Select posts in a Donatori Donazioni relationship that are a related to the current post in the loop.
Then added the above view "show-related-donazioni" inside the "show-post-title-donatori" view's loop output as you can see:
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