I run these: https://www.github.developerdan.com/hosts/

Of course the PiHole default ‘Steven Black’ list is also a combination of many well maintained lists and so even if you don’t add lists, his project is regularly adding new sources.

I have found https://firebog.net/ to be a good source for generally non-disruptive lists, which you can pick and choose from based on your needs. Hope this helps.

I find good recommendations on reddit.

Pi-hole sub or something else?