The first beat played is unknown to me... yet another great beat stashed away on a few dozen laptops for the rest of us to probably never hear.
Second beat was Don't Stop by Que D. Third is the end of the Intro to the "Jay Dee Project". Fourth is indeed "Fresh for 1998" from that same Jay Dee Project. Everything else is unknown to me as well.
I guess I'm just confirmed what you said because I don't know the rest either.