Board Thread:Off Topic / Fun and Games/@comment-27468706-20160515232231/@comment-1826623-20160807112606

12 Beast, created by Okayado (same author of Monster Musume, so many species present)

Centaur no Nayami (features a large variety, but mostly Centaur, Imp, Angel, Satyr)

Jitsu wa Watashi wa (technically has a vampire)

Maga-Tsuki (Kitsune)

Demon Spirit Seed Manual (Succubus, Fairy?)

My Love Tiger (Kobold, Jinko)

Kyou no Cerberus (Hellhound?)

Hitomi-sensei no Hokenshitsu (Too many species to count)

Itoshi no Kana (Ghost)

This is only a small portion of the total number. I don't even know how many anime/manga feature Mamono, but I'm happy to add to your list. All of these are manga I've read, and I'd recommend them to anyone looking for a good story.