In thinking about it, I have come up with a different set of mana groups for the creature spells. I will list them and explain my thoughts.
Feral Magic: Arcane Mana.
Feral magic is the magic of creatures, and uses a mana type that does not correspond to any used by the guilded mages.
Blackfire Sorcery: Elemental & Holy.
From the WM guild histories, this has to include Elemental, and the Elemental/Lunar pairing is already used for Evocation Sorcery.
Evocation Sorcery: Elemental & Lunar.
Explicitly stated on the Energy Manacles spell scroll.
Domination Sorcery: Holy & Lunar.
All other sorcery combinations are used already.
Corruption Necromancy: Life & Lunar.
Pure speculation, the spells seem more related to existing Moon Mage spells than Warrior Mage spells (Shadow Tend - Shadowlings)
Perversion Necromancy: Life & Elemental.
Also pure speculation, but the spells seem more involved with elemental things, Blood Storm, then lunar things.
Kyn, the speculating Warrior Mage