@sarvamedha
What do you think about an ancient Kshatriya migration into Western Ghats? Prabhu castes (including Panchkalshi / Chardo) of Marathi-Konkanis, Bunts of Tulu, Nairs of Kerala, all of these seem to have elevated Steppe admix, and claims of Kshatriya descent, a pattern.
This is more or less obvious btw. Because the Steppe % deviation between Sub Narmadan generic V4 and V1 is >10%, implying two waves of Northern V1 admix.