Excluding Nyaa or private trackers, as many ongoing and more obscure titles aren’t available to torrent. I’ve been using Comick and Weeb Central, but I don’t really know how up to date they are on new scanlations as I think they’re mostly aggregating from other sources?
I’m partial towards bato.to. It used to be the aggregator before MangaDex came around, it even had ads and revenue share with the scanlators who uploaded there. Alas it eventually got a massive DMCA just like the MangaDex one, and combined with constant DDOSes and overall maintainer burnout, it died. It recently came back under different ownership and seems to be a very complete aggregator, which leans even harder on the piracy aspect, as it hosts official translations.