I'll be adding a few more things to this list, especially in the non-human sections, but this is what I have planned out at the moment (minus a few things that I thought were too spoilery).

  Basic

  Earth

  Fire

  Light

  Water

  Wind

  Variant

  Cloud

  Lightning

  Shade

  Sound

  Stone

  Arcane

  Chaos - This is currently considered an arcane type, but it might be subject to reclassification once it's better understood.

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  Crystal

  Life

  Mental

  Null - Technically, this means no affinity, but it's considered an arcane type for classification purposes.

  Void

  Combination

  Combinations have a synergistic effect. Magic users with combination type affinities can use each of their component magic types (though not as well as a pure affinity can), as well as using magic unique to their combination.

  Blizzard (Crystal + Water + Wind)

  Blood (Life + Water)

  Clay (Earth + Water)

  Firestorm (Fire + Wind)

  Flare (Fire + Light)

  Ice (Crystal + Water)

  Lava (Earth + Fire)

  Metal (Crystal + Earth)

  Mirage (Light + Water)

  Sandstorm (Earth + Wind)

  Snowcloud (Cloud + Crystal)

  Storm (Water + Wind)

  Swamp (Earth + Water + Life)

  Thunderstorm (Lightning + Water + Wind)

  Wood (Crystal + Earth + Life)

  Rainstorm - Nickname for storm affinities with a strong water primary.

  Windstorm - Nickname for storm affinities with a strong wind primary.

  Spectral Beast Magic Types

  Replication (Mimics)

  Puppetry (Revenants)

  Mythic Beast Domains

  Dream (Ki'shiu)

  Forest (Ket'yia)

  Forest Sanctuary (Ket'shiu)

  Island Sanctuary (Naslunal)

  Snow (Essu)

  (We'll find out what the "sanctuary" part means later. You'll have to just speculate about it for now. ?? )