https://github.com/stashapp/stash

How do these programs work? Do they just record the stream?

Makes sense. What about individual folders? I’m concerned that the massive amount of small files could slow down the download quite a bit. Unfortunately, I’m not too familiar with the BitTorrent protocol, so I don’t know if this would have an impact.

Simpcity.su and Coomer.su are the sites you’re looking for.

If you want more, you can always search for the model + something like leaks on Google. Scroll down to the bottom of the search results, and you will probably find a DMCA takedown notice. Following the link contained in the takedown notice brings you to LumenDatabase.org where you can request the infringing URLs.