This question was left as a comment under the question Any visible indication that a user is unregistered (apart from profile page)? Bounty disappears with cookie?:
Why is there no indication of an unregistered user?
Well I've done it again and that's on me. But still, has there been any thought of maybe adding a tiny "U" or a small black corner to the icon, or writing the user name in gray font, or some other indicator or symbol or even a hovering reveal?
I understand that one can go to the user profile to check, but it would be handy to have a quick notification on the page of interest.