What's the third human subrace? Only metavariant I'm aware of is Nartaki...
By my count, there are:
Humans (2)
- Nartaki
Dwarfs (5)
- Gnome, Hanuman, Koborokuru, Menehune
Elves (5)
- Dryad, Nocturna, Wakyambi, Xapiri Thepe
Orks (5)
- Hobgoblin, Ogre, Oni, Satyr
Trolls (5)
- Cyclopean, Fomorian, Giant, Minotaur
So that is 22 metatypes for core "humanity" variations
Plus the Metasapients: Centaur, Naga, Pixie, Sasquatch, and Shifters (of which there are 10 variations)
For another 14.
So that is a total of 36 base races before counting Infected, which is an alteration to the base race. Although it can only apply to the "human" variations plus sasquatch. So it is really only 3-4 variations of Infected (Type 1, 1a, 2, or 3)
Plus anyone can be a Changeling, but again, that is just a variation on the base race.