https://kagi.com "small web" filter has a custom index that ranks websites that don't have analytics and ads higher (by running uBlock Origin on the website to detect them)
https://exa.ai/search works well as long as you write a good prompt and skim the top 10
https://websets.exa.ai/websets/ good for compiling lists and finding rare results- embeddings-based search combined with AI filtering (partial matches are useful to mine)