Torrent search engines that crawl the DHT seem like they’d be the least likely to be taken down, as they don’t host any torrent files or run their own trackers, they simply crawl the torrent DHT directly for magnet links.
Here are my two favorite DHT-based torrent search engines:
Lol I’m def not a reposting bot (I know, something a bot would say). I just accidentally screenshotted further down the page than I intended and it left out more recent posts by this admin.