Apple Music discrepancy between Apple TV 4K and Mac/iPhone

On my TV, when I go to Apple Music App on my Apple TV 4K hardware, and list the music by artists, it is NOT my music.

All other iCloud related items are correct: Photos, appleTV, FaceTime, Podcasts.

I have signed out of my Apple TV 4K hardware, re-signed in, no difference. I have gone to Music on my Mac and deauthorized all devices, etc.

No change.

How can this be? What else should I try to do to fix this?

[Re-Titled by Moderator]