I have watched tons and tons of Anime at least 250 in the 3 years i'm been watching anime online, and i must say i see all kinds of shows, from Horror, Detective, Action-packed, and Adventures to Lovey-dovey, Msagical Girl, Vampire, Musical, and some that seemed no different than real life animes.

I don't think that even if i wanted to, i could find a genre that hasn't been made yet for anime.