wiki says:

> A 2019 National Bureau of Economic Research working paper by Peter Arcidiacono found that 43% of students admitted to Harvard College were either athletes, legacies, members of the "Dean's" or "Director's" lists of relations of donors or prominent figures

So mostly all the white folk.

It's not an either/or. Very few people have the connections necessary to get into elite schools with, say, a 1.0 GPA in high school (or an equally terrible performance on whatever your preferred measure of merit is). But Harvard is filled with merely moderately above average legacies who would have otherwise ended up at a good state school or equivalent.