Noah seems to be a universal archetype—I don’t see this as evidence of Genesis’ essential falsehood, but rather of its essential truth.
The Hindu version has the Messiah, not just the distant "He's in Heaven" God, present. He ties Noah's boat to a great mountain so that it is not destroyed by the storms in the sea.
We meet this Messiah image, as the Great Fish in Jonah. Christians in later ages use the Fish in their own set of symbols.
The Babylonians also used the Fish as an image of their equivalent of the Hindu sages and fields of knowledge.
Abraham gets credit for establishing a rationale for not undertaking human sacrifice.