@Crazyguy
Two problems with your theory:
1. The "rib" story predates Babylonian exposure. The previous creation story, chapter 1, about the six creative days is the one that came about after Babylonian captivity. Philologically speaking the second story, from Genesis 2, is not only much older but clearly comes from Hebrew oral narrative.
2. The word in Hebrew is NOT "rib," which is the point of the thread. The use of the word "rib" comes from Gentile renderings and is anachronistic, such as the way people picture an "apple" as the forbidden fruit. While you are correct that the idea of a rib comes from heathen sources about creation, this has influenced the TRANSLATION of the Hebrew text, mostly by Christians who from their exposure to such stories inserted the idea of a "rib." The Hebrew expression is ambiguous at best and hard to situate, and outside of borrowing some Mesopotamian cosmogony this narrative has many original elements unseen in other mythologies.