Many different species of the homo genus adopted the same "technology set" of the Acheulean stone making packet, including Homo erectus, Neanderthals, and other early archaic human species. That's a widespread tool set that probably resulted in similar social formations across different human species, and we have lots of archeological evidence for this tool set. Given that such technology is shared across species, I don't think it's uselessly broad to assume there was also shared social formations.