Hmmm... here we go. Also, there may be more as I go through my Unfinished Lists and re-read some titles. Who knows, I might just grow to like certain things I didn't like or couldn't connect to, when I was a different person, then.
Shoujo/Josei(I wish there were more memorable series but sadly, I'm not always that big on just typical romance.)
Yoshihara Yuki(the only Josei mangaka whom I dare touch, in terms of smut)
Boys' Love(I really want to use the correct term instead of "yaoi" and "shounen-ai" which tend to signify really different things. Errr... f*ck, why is this list so long?)
Takaguchi Satosumi(when she writes very well, that is.)
Takao Hiroi and Kamuro Akira(they write all their BL series together.)
I can't remember the rest... right now.
Guro(yes... this is a separate genre to prevent any mishaps.)