I have multiple content types tagged with a user reference field (username) displayed in a view...

What I have:

I have multiple content types tagged with a user reference field (username) displayed in a view.
There is an exposed filter on the view with a select list of all usernames.
I can select the name and see all the content associated with that specific user.

What I want:

I want each content type to be required for each user.
Then I would like to be able to see a view to check to make sure a user has each of the content types (show content that is missing for specific users).

Any suggestions?