Minor tangent: how strongly does the minority component factor into this, versus the low-income and first-generation components? In other words, does this still apply to high-income, second-generation black and Latino college attendees?
There is definitely quite a bit of overlap as minorities are more likely to be low-income, first-generation college students. When taking that into account it's not clear that those groups form a majority of the population.
So we could more accurately say that Ivies help students earn higher salaries, except for students from certain privileged backgrounds.