Though given most people use gmail or outlook, the two main oauth providers (Google and Microsoft) will know anyway
True they'd know which sites you've signed up to, but not the login times, unless the service emails you every time you log in.
Three main providers
(Apple login is in nearly every iOS app and most websites)
True they'd know which sites you've signed up to, but not the login times, unless the service emails you every time you log in.