I have a crush on multiple people at once! 😅

First year of sixth form, I realised I think I'm either Bi or Lesbian. Now I'm in my second year of sixth form, and I'm really confused, as I seem to have a crush on 3 people at once. And we're all in the same class, which only has 6 people in it in total, including me and my 3 crushes.
Back in high school, when all the other girls would talk about crushes, I never had any.
Person A is non-binary - they were the first crush. Our personalities go really well together, I find them interesting, and we have a lot in common. They're the sort of person I want in my life forever, but I'm not sure that I'm sexually attracted to them.
Person B is female - I find her really gorgeous, love her fashion and her confidence, have a few things in common but not much tbh.
Person C is male - he is really nice and friendly, we have a lot of common interests and get on really well. But I am wondering what if the only reason I have a crush on him is just because it's clear he has a crush on me and I'm flattered that someone is actually interested in me, as the other two crushes don't seem as eager.
I am wondering if this whole situation is actually symbolic of me trying to figure out my sexuality.
Why is this happening? How do I know which one I actually have a crush on? Is it possible to have multiple crushes at once? How do I know the difference between someone I want to be friends with and someone I want to date?
All advice and perspectives appreciated 🫠

update please

Decided none of them are quite right. Additionally, I'm now very busy with A-Levels. Me and my crushes are still all in the same class so that's kinda funny 😂