I made a post with a bunch of suggestions from my list and then my browser extension that limits my time on HN lost my whole comment including all the little explanations I had for each one. So here's my raw list instead haha

  meta
    https://www.gnod.com/search/
    https://github.com/searx/searx
  categories
    independent
      https://www.crawlson.com/
      https://search.marginalia.nu/
      https://wiby.me/
      https://searchmysite.net/
    international
      https://bonzamate.com.au/ australia
      https://www.baidu.com/ china
      https://yandex.com/ russia
    code
      https://searchcode.com/
      https://codesearch.ai/
      http://symbolhound.com/
      https://publicwww.com/
      https://search.feep.dev/
      http://codesearch.debian.net/
      https://codesearch.isocpp.org/
      https://www.programcreek.com/python/
      https://livegrep.com/search/linux
      https://grep.app/
    ai
      https://consensus.app/ scientific consensus
      https://github.com/jokenox/Goopt procedurally generated
      https://same.energy/ image similarity
    products
      https://www.looria.com/
      https://knifist.com/ knives
      https://attic.city/ home and fashion from indie stores
    topical
      https://biztoc.com/search business news
    premium
      https://kagi.com/
    other
      https://metager.org/ privacy centric engine that combines results of several engines
      https://thangs.com/ 3d models
      https://filmot.com/ youtube subtitles
  lists
    https://seirdy.one/posts/2021/03/10/search-engines-with-own-indexes/
    https://web.archive.org/web/20200710091019/http://www.jaruzel.com/textfiles/Old%20Web%20Info/Internet%20Search%20Engines%20v2.61.txt

Hope its useful still