[IMSAI8080]

And FreeTube for desktop (just has regular adblock). It's an alternate client with a nice UI with a similar layout to YouTube.

https://freetubeapp.io/

[mrln]

FreeTube also has SponsorBlock built in, actually. I highly recommend it!

Also, I would not call it "adblock". It just comes without ads out of the box, just like most comparable apps.