Is alpha/omega/everything in between real in humans?

A lot of pack animals have leaders called the alpha male or female. Like for wolves, you have the alpha male who gets first dibs on food and mating partners. Apparently, this works for humans too, at least on a societal basis, carried by mankind’s need for maintenance. It seems that dominance and power can take many forms in order to maintain the human race, whether it’s from some dude in a bar sleeping with all the girls, or someone who owns a computer company. Question is, is there truly some order like this which dictates natural selection? seems kind of unfair and sexist, but who am I to argue science lol
I found this online which seems to describe all the ’‘classes’’. Most of the replies to the finding say that this sort of study lacks proof and credibility due to the studies themselves being rather inconclusive when it comes to actually proving anything. But it sure does exist in some animals. Is this true for people too? How legitimate is this thing I found? Women also belong to the same classes, and how exactly does this work out? I can find plenty of stuff about this regarding men, but very little for women. So, is all this true or not? What do you think/know?