They index results from five sources and update the main ones (two LibGen forks) monthly. They mirrored the Z-Library database before the website was seized (end of November 2022), indexed the new .onion addresses and haven’t updated the dataset since because they’re waiting for the situation to stabilize in order to figure out a way to regularly fetch new stuff from there too, as far as I know
BakaBT is a private tracker that has lots of high quality anime/manga artbooks, soundtracks and extras like that. That’s all I use aside from Nyaa, but my needs are pretty basic in general