1. fat boys
2. epmd
3. grandmaster flash and the furious 5
4. rockafella(not really a group but i thing u get it.)
5. leaders of the new school!

alright lemme think.......

1-leaders....c boogie brown going thru it right now, wish him the best...

2-nwa...when ice cube left, that shit was huge....

3-idk...epmd i guess?

4-oh yeah..when puba left Brand Nubian...

5-outta gas son....new edition?the smothers brothers? fuck it, the 5 heartbeats!