Seconded for Wipr. It's my favorite adblocker I've tried yet (although 1Blocker is also really nice). And if the author sells it to some creepy company, the Safari API means that the new owner can't spy on my viewing. I'm not sure how it could be materially improved by using less privacy-respecting APIs.
> the new owner can't spy on my viewing
Quick question: how do you distinguish content blocker extensions from regular extensions? All the Adblockers I know have to use both to be effective at hiding ads, especially on YouTube.
In that case, the new owner can still do the spying.