So there were no tribal hierarchies when humans were nomadic and the strongest physically held power? Of these non-hierarchical orgs you cite, how many were ro

So there were no tribal hierarchies when humans were nomadic and the strongest physically held power? Of these non-hierarchical orgs you cite, how many were robust to external change and able to survive times of stress? I’m also not familiar of any non-hierarchical org that wasn’t steamrolled by a more dominant hierarchical society