Both have that Fe kind of atmosphere, and seem warmer to me than the kind of standoffish Gamma/Delta, but I still see differences between Alpha and Beta. From my experience I've found Alpha groups as generally more inclusive and flexible. The essence of the group is more accommodating and adapts to the needs of the individuals within it. It's more like a collective harmony that takes into consideration the immediate needs of all of the people in it. Beta groups to me seem more absolute - you're either in or out, and it seems like at times one person's will takes the lead and becomes the group dynamic, then that person loses power and someone else's will takes over, and everyone follows. There's no continual feedback of the immediate needs of everyone in the group as time goes along, as those are seen as superfluous.

What have you seen?