When you speak of the Sumerians, apparently you choose to overlook the third millenium Sumerians who were contemporary with the Egyptians of the old kingdom. Their ruler was Sargon I and their god was the sun god Samash. And back here we are talking 2600-1900 BCE. The Sumerians were conquered by the Gutians and the law, or code of Hamurabi came about 2000 BCE. This was the Canaanite periord and the map makers of Elba had as their god Yah.

The 1st Dynasty of Babylon 1900-1750 paralleled the Age of the patriarchs Abraham, Issac, Jacob but they were more influenced by Hyksos who had control of Syria-Palestine and were in the area of Ugarit at the same as the Hittites of Turkey destroyed Asshur and Mari. It was the Hyksos that brought Joseph to Egypt during the Egyptian 2nd Intermediate period, about 1750 BCE.

About 300 years later the Haibru sea people conquered Palestine and this was the Hebrew Age of the Judges. In 1275 the exodus from Egypt happened and during this period the Mesopotamian area saw the decline of the Assyrian nation and they had no influence over Palestine until after the division of the United Monarch of King David into Israel and Judah or Jerusalem after the death of Solomon. Which brings us all the way down to the Assyrian revival and Sargon II ending Israel with the fall of Samaria in 722. In another 100 years we saw the rise of the Neo-Babylonians in 612 and the conquest of Nebuchadnezzr over Judah in 587. His Diaspora of moving the Jews into Babylonian exile until the return in 539 ended the use of Hebrew as a language and gave us the Bible as a recording of the Jewish past, history, and culture.

So, culture influences over 3500 years pretty much obviate your direct linkage of religious tradition and the spurious shamanistic ties don't hold water when you consider Abraham over 500 years away the existence of the Jewish religion as formalized by King David. And to connect this with 1500 years later the development of the Muslim religion is way beyond a tenuous stretch. I am surprised you ingnore the influence of the Gilgamesh as a pre-Biblical text.

In short, you have Abraham (who was in Syria-Palestine) over in Mesopotamia preaching a synthesis that became the Babylonia Gods compressed into one over 1500 years. This is a rather tenuous premise and lacks the historisity to validate it. Sorta like vortex theory.

Publius