Diviner You attempt to find water or lost objects, and predict future events. May be used by Onmyoji, Sou, Kannushi, Kaminchu, Yamabushi, and Sennin (though technically during certain periods it is only legal for Onmyoji to do so). Key Stat: Wisdom.
Doubutsu Japanese term for 'animals', and is used in this instance to mean magic taught or used by them. May be used by Tsukai or Sennin. Key stat: Charisma.
Exorcist You may call or banish spirits, or sometimes the Dead. You can also force disguised or incorporeal beings into revealing themselves or solidifying. Includes some minor abilities to break magic. May be used by Onmyoji, Sou, Sohei, Kannushi, Kaminchu, Yamabushi, and Sennin. Key Stat: Wisdom.
Geomancy Chinese magic involving drawing on the power of locations. May be used by Onmyoji, Sou, Sohei, Yamabushi, and Sennin. Key Stat: Charisma.
Henshin Henshin is Japanese for 'change', and represents magic taught by the Yokai or resulting from transformations. May be used by anyone with the Bakemono Feat. Key Stat: Charisma.
Jugondo Healing through prayer. May be used by Onmyoji, Sou, Kannushi, Kaminchu, Yamabushi, and Sennin. Key stat: Wisdom.
Kami Worship You know the rituals necessary to call on the powers of the Gods for favors, or even bind minor ones into objects temporarily. May be used by Onmyoji, Kannushi, Kaminchu, and Sennin (but mostly the Kannushi and Kaminchu). Key stat: Charisma.
Kotodama The magic of knowing the secret names of things. May be used by Kannushi/Kaminchu, and on odd occasion by the Onmyoji or Sennin. Key stat: Wisdom.
Kuji-Kiri Hand gestures used to reinforce magical powers. May be used by Yamabushi or Shinobi. Key stat: Wisdom.
Mado Mado is the dark side of the other schools, and may only be used by corrupt versions of any of the classes (see the Mado Feat). Using it generally requires an evil act meant to slowly destroy ones sense of humanity. Key Stat: Charisma.
Medium The ability to allow oneself to be possessed by Kami, spirits, or even the dead so that questions may be addressed to them. May be used by Onmyoji, Kannushi, Kaminchu, and Sennin. Key stat: Wisdom.
Nazoraeru Mimetic or sympathetic magic, usually used for selfish or vengeful purposes in stereotypical cases, but not always. May be used by any casting class. Key Stat: Charisma.
Ofuda You cast protective spells to keep evil influences away, or make amulets or trinkets designed to do so. May be used by Onmyoji, Sou, Kannushi, Kaminchu, and Sennin. (I know Ofuda refers to a Shinto term, but you see them in China too so I included the Sou). Key Stat: Wisdom.
Onmyodo Specifically referring to their abilities at Conjuration as opposed to Onmyodo as a whole (also includes their ability to sacrifice things dear to them for temporary power). May be used by Onmyoji, and the rare Sennin. Key stat: Intelligence.
Shikigami You may imbue power into familiars (usually made of paper). May be used by Onmyoji, and Sennin. Key stat: Charisma.
Tantra Buddhist magic based on sounds, gestures, or poses; used by the Sou, Sohei, Yamabushi, and occasionally the Sennin or Onmyoji. Key stat: Wisdom.
Taoist Alchemy Chinese magic and the search for immortality. May be used by Onmyoji and Sennin. Key stat: Intelligence.