Rowan: Even with an unusual magical-girl type, and at a high power level, you can usually still work out a basic affinity from their costume.
Kudzu never got officially tested, but I’m sure he’s Fire.
Leachtric’s right-hand mage, Telga, was water.
The archmage of Tamapoa started with Nature.
And Acai . . .
Uh . . .
Violet: I’m pretty sure she was a special case.