1) George Washington, and many of the programs in New Jersey, some of the smaller ones in New York city and state, and definitely those in Florida (except for UF and Miami -which are numbers programs) are very heavy on rotators.
2) Other programs in NY, including HSS and Columbia, do not even interview all their rotators, so they definitely seem rotator light.
Cali and Texas programs tend to take Cali and Texas kids.
Hope this helps.