[zozbot234]

> There really is much more diversity in how humans were structured.

There was diversity, but given behavioral modernity and a sufficient resource surplus, complex social organization seems to have been something close to a human universal. Graham Hancock has pointed out that prehistoric people were capable of large-scale infrastructure projects the remains of which have survived in some form to the present day - and that implies some combination of effective hierarchical organization (required to coordinate the effort of significant numbers of people, well beyond the scale of a single band or troop) and long-term time orientation.