There are plenty of great Stanford students but they're going to come to you. The purpose of an elite education (these days) is to give people the confidence to go out into the world. This means that the overlooked talent is probably not going to fit the "Stanford Wallflower" bill, but be somewhere that most VCs wouldn't deign to look.

Driving across the street to Stanford "to identify and build new teams after seeing interactions" to scout talent isn't being proactive. It's what the rest of Sand Hill Road is already doing. If you're really serious about finding the best talent, broaden your search. Don't count the white Stanford males out, of course, but look in the "flyover" states, or for older programmers, or for women, or for parents who might be interested in programming because of the remote-work possibilities. Look outside of the US, even.

VCs are good at telling the 7s Who Look Like Them apart from the 5s Who Look Like Them, and that's about where it ends. That makes them better at assessing talent than a great many in the business world, but they're missing out on an incredible amount of information.