For the last time I am not a poonjabi. Furthermore, no Indian population is craniometrically similar to Iranians because Iranians have a lot of extra western farmer ancestry which is absent in India. Furthermore, the original Iran type ancestry is pretty evenly distributed in most south Asians from the neolithic onward, so no one has a lot more of it than anyone else.
No, one king who perhaps the most privileged position of his time in all of India getting into a marriage contract is not going to change the broader picture. The yDNA distribution in north Indian Brahmin groups is generally around 50% R1a while around 25% of the autosomal DNA comes from steppe people. The total 'west Eurasian' maternal lineages in Brahmins are under 20% and this includes the ones from Indus valley. The actual steppe maternal lineages are fewer than that.
Their steppe ancestry is overwhelmingly paternal in nature. This is the truth of the Brahminical existence- you could not have existed without steppe men while groups like the Kalash could not have existed without steppe women.