With no order inside tiers:
A++: Geiger, Midori
A: Jaina, Grave, Valerie, DeGrey, Rook
Setsuki could just be A, maybe I'm just bad against her.
Geiger gives the hardest time to Jaina and Rook, like 3-7 hard. And finding a counter for him isn't easy.
Midori is stupid, move along.
Rook has hard matchups, but easy ones too. They balance out, so I'm super against this "Rook is low tier trend".
Valerie could use a buff to her yellow options, it really makes no sense that she can be grabbed out of them, but besides that she's solid.