That was a wonderful encapsulation!  And yes, it does jive magnificently!  It touched on so many of the finer aspects of this fascinating discussion.  It's a real keeper!  :thumb_up:

Well, it was common in ancient times to form allegiances with powerful neighbors and the Egyptians were certainly no exception to this survival strategy.  Assyria was a big threat, as were the Hittites, so marriages sealed a familial bond in times of great political need.  Likewise, Cleopatra was from Macedonia, centuries later. 

Mitanni was not ancient Persia, but an extension of the proto Indo-Persian-Aryan culture.  It was situated in Anatolian territory, sandwiched between the Hittites and the Assyrians, in the Northern region of the Tigres & Euphrates, circa Akhenaten's time period.  Present day northern Iraq and Southern Syria. 

My best friend is Armenian and he maintains that the root of the Supreme form if God as Light or the effulgence within fire, were existent long before the Abrahamic tradition adopted much, if not all of it's cosmology ("Let there be Light", The Burning Bush, "If thine eye be single, then thy whole body shall be full of light", etc...).    

Mitanni's cuneiform tablets record mention of Indra and Mithra.  The court language was proto-Sanskrit, as well.  I suspect technically their form of worship was more likely, existent prior to the Zoroastrian religion, but the Gathas didn't just fall out of the sky, as much of their foundation was already old-hat when Zarathustra synthesized it into his own doctrine.

Bellow is the Royal seal of Mitanni, with the familiar symbol of what would later become known as the Faravahar, the substantiation of God as Light.