Bro you are wrong here. Many Awan and Arain families belong to East Punjab who migrated from there during partition. Even Wasim Akram's family who are Arain also migrated from East Punjab.
See this video where Wasim Bhai's dad and he visited their ancestral village in East Punjab.
Bro even if IVC people were not Dravidian they were a purely separate race having no relation or connection with Rajputs, Jatts and Gujjars who are actually the descendents of the Indo-Aryan, Scythian and White Huns invaders from Central Asia and actually carried out a genocide of the native IVC people. The small numbers of IVC people that survived were made slaves by these invading hordes.
Moreover there are various IVC sites in Indian provinces of Rajasthan, Gujrat and Haryana. A lot of academic material regarding these sites is available on web.