It is a fully local Chrome extension, Which uses YouTube channels to isolate your watch feed. And you can quickly switch between profiles with a shortcut or using the 3dots menu of a video to watch in a specific profile.
Or if you are a bilingual person like me and want to maintain two seperate feeds in one premium account...this would help.
Would love to hear some feedback if you find this extension useful.
Free Extension is at: https://chromewebstore.google.com/detail/yt-profiles-multipl...
Know more about the extension at: https://ytprofiles.shyl.work/
Built with love for the community and nothing else.