ancient Babylonian religion of Isis and Osiris and also assert that it is the root of the Illuminati of which many of the elite internationalists are said to be.
That whole Isis and Osiris thing is interesting, as I've heard that people in the chemtrail community basically believe in that (as the deep background to the conspiracy).
Personally I don't see any real evidence for it, and it does not seem like there's going to be any one old mythology like that behind the working of the elite. The billionaires are a very varied bunch, with many different ideas. I suspect they would find such talk quite laughable.