I have 2 that i’ve read,
https://www.mangago.me/read-manga/there_s_no_way_this_is_fate/
this one is an omegaverse story with two alpha tops and an omega bottom and it’s quite smutty, but it hints at there being feelings between the two tops too. there’s a “newlywed arc” posted as a separate story, too.
https://www.mangago.me/read-manga/triangle_lovers/
this is just modern world but it also has two tops and they all call eachother boyfriends it’s cute, quite smutty as well
there are probably so many more but I can never find any

insane amounts of people hating on the real polyamory and translation and story as if it was the worst thing they’ve ever read oh my god. I liked all three of the characters they all clearly have their flaws but they aren’t completely one dimensional or just straight up assholes for no reason which I appreciate. I also like the focus on how the two tops can love eachother even if neither of them want to bottom. I didn’t mind the fact that only one bottoms bc #tbh as long as they’re all in love with eachother I never care about the t/b assignments. I really wish there was more genuine polyamory and not love angles or two characters in love with one other and hate each other.