It’s been a while since I was into unlocking and ROMing my devices, but I’ve got the itch again.
XDA used to be a good place, but… I hope I’m out of there loop or something, because it’s almost a ghost town compared to years ago.
I’ve got us carrier unlocked devices; OnePlus N10 and N20, Moto G7Power.
Many of them are on Telegram. Try looking for the groups by device name.