[TexasNative2000]

"Tiny bands of early humans, forced apart by harsh environmental conditions, coming back from the brink to reunite and populate the world.

Well, if you define Noah's family as a "tiny band of early humans" and describe The Flood as "harsh environmental conditions" he's got it right.

[muawiyah]

In a little bit older version of Ma-Nu and the flood, there are, of course, a number of humans on board the boat, but most of the passengers are simply "sages" or "demigods" of a sort who understand all the arts and skills.

Once Ma-nu and his wife begin making babies, the sages pass along their knowledge then disappear back to Heaven.

So, yes, 7 personages, not all of them human though.

Do you have an "older version" than that?