A friend of mine who spent his entire career in Silicon Valley, starting in the late ‘60s when it was staffed almost solely by white American engineers, agrees with what you just said 100%.
Ask your friend if they’ve noticed which province and group seems to bubble to the top and which get 2nd billing. The caste system has never left Indian immigrants.
(Skeptics, just DDG search for “caste system indian americans” and you’ll be stuned in the beeber.)