Signed out of icloud, but photos still displayed

I used to have iCloud and Photos activated on my Apple TV. However, it started displaying some... personal photos and now I can't get them off! Ten of them are still displayed when the Photos app is hovered over. If I click the app, or one of the pictures, I get an endless white screen with a spinner, which is fine. But when I go back, those 10 photos still display across the top of the Home Screen.

Things I have done:

Deactivated iCloud/Home Sharing on my Photos app on my computer (where the original pics are stored)

Turned "iCloud Photo Sharing" and "My Photo Stream" to OFF under Accounts>iCloud on my Apple TV

Signed out of iCloud under Accounts on my Apple TV

Attempted to log in to iCloud on my Mac in order to delete the pictures, but they aren't technically on iCloud anymore

Please help!