No, its not about which are and which are not. That one can look up in sourcebooks or just make up.
Its just, that one thought had hit me concerning that: Now, some leagues do not allow metahumans to take part, others do. Indeed, it seems Metas are the first allowance to be made, even before augmentations and adepts are allowed. However, think about: A towering Troll in the same league as a human? Ah, ouch. But okay. However, what occured to me is: Doesnt this make gender-segregated leagues patently absurd? Surely the differences between a troll and a human are way larger than the differences between a male human and a female human, after all...