I've also been looking for other places to sell my adult games, but ended up releasing a free version of my new game on itch and a donation version on patreon. It's really not easy for nsfw devs right now.
itch seems to be the best place for queer/gay/bara games like mine, and I hope a solution regarding payment providers will be found.
(You said "not Steam", but it's at least somewhat of an option, but it really depends. Got my game Demon's Soulbound accepted, and it's very NSFW. I thought I'd run into more trouble there.)