HigHurtenflurst on 05 March 2014
Futuristic (high speed and usually "magnetic" track based: Extreme G, F-Zero, WipEout, Star Wars Ep1 Racer, FAST.
Snowboarding games often have a racing focus (could be put into sports category along with Wave Race as a genre but the game mechanics are very different)
You didn't mention many other kart racers (Crash, DKR, LBP, ModNation)
There are top down racers like Micro Machines, not sure what sub-category they might fit into other than their own.
And an unusual one could be Light Trax (WiiWare), in which you race beams of light.
