I would say 9/10 people follow cheerlebrities because they admire something about them. Could be looks, could be skills, could be just the uniform they wear; you never know. I don't think you're going to get the data you need from us. You might be able to get some help from a Twitter poll, but you won't be able to know both who everyone's favorite is, or why they follow cheerlebrities just from one poll.
I've been around long enough to know there are hundreds of academic papers waiting to be written about our sport, which is why I gave three examples. I'm sorry they weren't useful to what your class is. What major are you that Fan Culture is a course? I'm in radiography (medical imaging) so I never took anything like that.