im talking in general here,,with black and whites it is very obvious. i feed black guys who dont even compete or think in terms of bodybuilding,, i feed them 30mg dbol and some test or deca at 400-500mg and in 2 months you dont recognize them. why? because they were already built very well and looked jacked before starting the hormone usage! (not all but many) bodybuilding is mainly a black guy sport and the white guys try their best and sometimes do very well and become even better (arnold) but it is mainly a sport dominent by black guys.
when it comes to italians,,well they are white a little thicker physiqe if trained,,good forarms and can gain size easy but it is same as all whites.