Kagi nowadays has a feature called "SlopStop" that you can opt into. It's basically a global block list for LLM generated websites, etc that is shared across all users who opt into and anyone can report sites/content to it.

Kagi of course reviews it but generally it's good enough that I don't see much LLM generated content in the results anymore.

I doubt that my list would be of much use to you, since a lot of the sites relate to specific hobbies.

However, as eloisius mentioned, you can view the most commonly blocked sites. Going through that list is a good start: https://kagi.com/stats?stat=insights

If you’re a Kagi user you can view the most-blocked list and adopt it

- start with this website https://www.xjavascript.com/blog/ block it everywhere