The Sea People would have been the Atlanteans. Or, if you don't care for Plato, the Phoenicians.
There was a universal flood. This is why, for example, grain agriculture, as contrasted with nomadic animal cultures, universally then sprung up at high altitudes, with only the grains differing amongst the regions (wheat, maize, rice, etc.).
"Noah's Ark" comprised survivors of the sunken advanced society of Atlantis, and carried test tubes containing the DNA of many species needed for human civilization, such as goats, sheep, Egyptian cattle, rabbits, etc. There were several Arks, some going to the now-Americas (the legends of Viracocha and Quetzalcoatl), some to Polynesia (the heads of Easter Island), etc.
The Atlanteans were the "men of renown," the gods, the teachers of not only agriculture but of astronomy, geometry, architecture, and all the other disciplines, as told by the ancient Sumerians and Egyptians themselves.
They had elongated skulls, which prompted the practice of mimicry through binding of various cultures, such as the Egyptian.
So, yes, there are "contradictions" in the Bible, because the men who eventually compiled the stories, legends, and histories from both oral and written (Sumerian tablets) traditions were only human, plus they had their own agendas.
But it's a good basis from which to begin a study of both accepted and also "alternative" ancient history.