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 get a fair bit of mileage from Mangafox and Manga Read, though I just use their extensions in Mihon. No idea how their actual websites are