Rocky never repped Houston, he just fukked with their music culture he says it clearly on his first songs "I be that pretty mothafukka, Harlem's what I'm repping".
Drake and Houston a few years back. He used to talk a lot about Memphis in his early days but he actually spent a lot of time there. He talks about Atlanta, Las Vegas and Miami too.
2Pac didn't really rep Harlem or Baltimore on wax and he moved to California deep into his teens.
Prodigy wasn't from Queensbridge he was from Hempstead and moved to LeFrak when he was in his teens but he was always in Queensbridge.