Undergrad social scene?

I’m a very social, female perspective freshman who is very interested in BU! I really don’t know a lot about the social scene at BU (like what type of kids go there, how the Greek life is, what everyone does for fun, etc…). I want to find a tight knit group of friends in college, but intimidated by how big it seems. Is BU sorority scene like the stereotypical one you see at Alabama or FSU? Also, what’s the most popular way a freshman makes friends at BU? And most importantly, what kind of kids go to BU? I come from a prep school and I am sick of the prepiness and cliques. My goal is to go to a school where there is a diverse student body (artsy, granola, athletic, preppy, etc…).