Someone else’s name in my Apple Music.

Why is there someone else’s name showing up in my Apple Music? I’ve checked all of the profile settings and Apple ID settings and everything has only my name on it. Nobody has ever had access to my Apple ID or my music so I’m not sure how it’s possible that somebody else could be the “creator” of the playlists on my phone. How do I get this fixed? And does this mean that they can see/change other things on my Apple account? Or is it solely those playlists??