well form my understanding the original people of iran are the dravidians. The dravidians were the elamites. I don';t know about the dravidians being the aryans,but perhaps.I try to go on genetic markers and anthropology over the bible and other sources.,
the aryans I believe are the people who originated around the steepe area. The aryan invasion however is no longer reguarded as truth,and was a myth made up by colonial british.
so yes the original people of iran were dravidians. Dravidians probally form what i heard were tamils,which there are linguist that argue this.