Genetically modern human remains have been found and dated to over 490,000 years old.
So, not 'about the same'... just 'the same,' as I understand it. This is not my field of expertise, obviously.

Modes of being best suited for human biology? IDK exactly what you mean, but doesn't the outrageous innovation in modern biology make you stop and wonder if those ancient people might have different things to say if they were around today?

Things are definitely different now. Most people have magic communication computers in their pockets and access to grocery stores, and can travel between distant cities in a morning's time if they wanted to. Is our current conversation really that close to a fire-side chat? Closer to a pen-pal kind of thing, but w/o the weeks in between responses. That really does change the nature of the conversations.

All that said... "genetically modern human" means if you wash them up, dress them like the locals and teach them how to communicate, they'll fit right in soon enough...

So IDK... good question.

Still, my point is that there is no directly applicable moral guide. History, if anything, has shown that morals are fluid and tend to favor ruling authorities' agendas. If the ruled people can make that work, it will work. If not, bad times for everyone involved.

IDK.... mythology is different from history. Mythology is a crafted tale... whose value is evident in the fact that generation upon generation of people have seen value and quality in the stories. So there are elements to these stories which seem to resonate with many people, despite separation by culture and time.

IDK... too many IDKs in this post.