Even if he designed the majority, that majority < the few of Xyph's champions really. Please, you call Ashe, Sivir and all the old champs interesting design wise? Sure they have improved, but still, Ezreal can only design simple and basic things, dunno about Guinsoo, but IIRC he designed Shaco, Karthus and Shen, so he designs troll champs that are made to troll the enemy team, and generally be hated and annoying.
Xyph, Coronach and Brackhar is where it's at.
Also, only Xyph actually communicates with us.