AppleTV app

If you wish to remotely sign out, then use

• Check your Apple ID device list to find where you're signed in - Apple Support

Your Apple ID account may still be visible, but the use of any service that requires being signed in with that account, will prompt for signing in again (password). Other services and apps (e.g. Netflix, Prime) are not included, but these services may have a remote unlink option of their own. Else change the password(s) to invalidate any access by new users.

maybe Sign out of iCloud on your iPhone, iPad, iPod touch, Apple TV, or Mac - Apple Support