Jake was Jewish-sorta', and he has some of the best morphs. Don't forget, the Applegate/Grant family named their SON Jake.
Marco is Hispanic, and he's the smartest human involved, defying all stereotypes.
Rachel, the Nordic-Caucasian stereotype *insert verb here* (you mightn't know what happens to her, so I'll not spoil it).
The only thing to make it LESS racist is to add a character of Asian descent!