Hmmm in real wolf packs it's actually rare for there to be more than two alphas. But if you think about it a wolf gives birth to 6-8 pups and they all have different abo status. If there's too many alphas they'll leave and start there own pack. So I would say they /could/ have the same abo status, but if they do its more Likely for an omega and beta not alphas
Well, it’s rare that a/b/o fics give the pair more than two chilren at once. It’s mostly regular human pregnancies. And depending on the fic pack dynamics are ‘modernized’, so being part of a pack is less important than being part of a family that tend to work with a different dynamic. So even if there were two alphas (or more) in the vicinity it wouldn’t be a real problem because they lack clear pack structures which would make them compete for a better position in the hierarchy? Because if nature had some way to reduce alpha offspring then that would count for regular siblings too right? The likelihood of Dean and Sam being both alphas would be slim if it’s bad for the pack, right?
In lamb!Verse I do have a more traditional pack dynamic where there’s one pack alpha (so the leader of the pack) and even if other people are biologically alphas too, they have to fight the pack alpha for dominance, submit to the pack alpha or leave the pack. But that’s a situation where pack dynamic status is far more fluid than regular presentation (in theory an omega could also raise to become pack leader). And not being part of pack leadership can have effects on the other members of the pack.For example:, wolf!Dean’s an alpha, but since he submitted to his father who’s a very dominant alpha, Dean’s own alpha hormones are suppressed and he’s basically in a beta position - that means no ruts for example.
If we take a somewhat historical AU like pagan gods verse it might be different yet again.
(I think I went off on a tangent here. But for me it’s an interesting tangent *lol*)