Of what you listed the most similiar that comes to my mind that hasn't been mentioned are Blood and Vampire Knight
Blood : (taken from wiki)
Under the care of her adoptive family, Saya Otonashi has been living the life of an anemic and amnesiac, but otherwise ordinary schoolgirl. Saya’s happy life is shattered when she is attacked by a chiropteran, learning that she is the only one who can defeat them.
Armed with her katana, Saya embarks on a journey with her family, allies, and her chevalier, Hagi, to rid the world of chiropteran and rediscover her identity.
Vampire Knight:
Basicly it's about a school with a night class ( for vampires) and a day class (humans) although the story is more complex than that of course.
Both were pretty good imo. Blood somehow reminds me of FMA.. might just be me though.
Btw, the awesome ost of Eureka 7 makes it win :p
