You can get relevant recommendations on a browser with no YouTube account if you don't clear your cookies/data. Use a single machine or separate browser for all YouTubing where you care about that feature. If you watch a channel a lot, the new videos should pop up on the home page even without subscribing, and you don't have to check bookmarks constantly, although you should have all the channels you like bookmarked just in case. You could create a single bookmark file on your local network to use on all your machines.
You can also use
Simple YouTube Age Restriction Bypass to view age-restricted videos anywhere they appear without an account. It even works on embeds on Kiwi Farms.