There are leaders and followers. There are also people who just do their own thing and others that fluctuate from leading to following based on circumstance.

The "alpha"/"beta" wolf-pack dynamics were debunked a while ago. Packs are typically made up of parents (previously referred to as "alphas") and children (previously referred to as "betas").

Status is definitely important, but the alpha/beta/omega/gamma/delta/greek-anthropomorphism thing is a load of crap.