Ask HN: Who is running the abusive scrapers?

Personally I once had to triple app capacity and double database capacity just for just one scraper. I remember Cloudflare once figured out that Perplexity was one of the bad guys ( https://blog.cloudflare.com/perplexity-is-using-stealth-undeclared-crawlers-to-evade-website-no-crawl-directives/ ) but has anyone else figured out who else is running large scale and poorly behaved scrapers?