Depends on how you define dominating? Selling the most between all titles combined: then platformers (you didn't even listed them). Mario 2D, Mario 3D, Rayman, Sonic and all the other stuff should sell millions. Platformers are already in lead with NSMBU, Trine 2 and the upcoming Rayman.
If it is the sheer number of games then probably RPGs (there is no real difference between JRPGs and WRPGs, this distinction makes no sense).







