The thing is that EX Kyo actually zones pretty well with his rekkas, just different that say like, Ryu or Guile in SF4. I suggest you avoid a strictly zoning style in KOF until you can learn how to create a solid offense, as that's generally more rewarding in this game. However, everyone with a fireball, with maybe the exception of Kyo, Terry, and Takuma, are pretty good projectile zoners. Daimon and Maxima are also decent zoners, again by using giant hitbox moves compared to projectiles. But like the others said, just pick a char you think looks cool. It'll be fine.