Very much hardcore yaoi, but it has to have a happy/satisfying ending or else I'll rage, lol! I generally don't recommend any that aren't finished for that reason, but Painter of the Night is really good, and even though it has r*pe in it, Warehouse was a good read with a happy ending.
I'll put up a list here, lemme go looking~ A lot of these are ones that had to be translated - I need to add links to ones that can be found on Tapas. >.>
Complete:
GIFT (top fav, very uniquely told story but is only partially translated and is a biotch to find translated)
Yagi to Ookami no Hatsujou Jijou (Animals ears, basically omegaverse)
Wolf in the House (Masterpiece, awesome werewolfish and amazing ladies here)
Shiba-kun to Shepherd-san (Short Uke, adorable manga)
On Doorstep (delinquent X cop)
Fukouchuu no Shiawase
Koubutsu wa Ichiban Saigo ni Hara no Naka (cat ears, omegaverse, absolutely adorable)
Midnight Rain
Incomplete but seem really good so far:
Love Me Doctor
Black Mirror
Cherry Blossoms After Winter
Legs That Won't Walk