As of this week, North Carolina, for sure, at least by NET standards.
AP wise, I'm not totally sold on Arizona and Baylor; Arizona has one very close OT win over Louisville and otherwise a pretty underwhelming slate of victories (including a few inexplicably tight ones, like Vandy), and Baylor doesn't even have a good win yet at all.
And, quite honestly, Stanford really doesn't feel like a #2 team. I feel like we have that honor only because everyone below us has worse losses than we do, and we do have a pretty good slate of wins (vs. Maryland, vs. Indiana, @ Tenn, @ Gonzaga). I can't make the case for why NC State or Arizona should be ranked above us, but I also don't feel at all like we're the #2 team in the country.
I guess this is what parity looks like?