[thaumasiotes]

>The oldest surviving Akkadian and Sumerian references to the flood precede and are pretty close in time to the Aryan expansion to the Indian subcontinent, and the Mesopotamian cities had long-lasting trade, cultural and military links to the peoples living in the Iranian plateau.

Note that the oldest attested Indic people lived to the west of the Iranian plateau. https://en.wikipedia.org/wiki/Mitanni