Yup, I was in college in the very late 90s and early 2000s, I can attest to that. With the exception of some HBCUs, there was never really any clear separation of classes between blacks. The wealthiest, and the middle class blacks had a tendency to do their best to fit in with the poorest blacks--not the other way around. They attended their parties, dressed like them, talked like them, were are the forefront of their causes etc etc...they were pretty much indistinguishable on campus.
With poor whites and wealthy whites it was completely the opposite. The poorest ones did their best to emulate and "fit in" with the wealthiest and middle class ones. They were often indistinguishable as well