However, the actual enrollment at most of the elites includes relatively few students from the middle to low income range families (as proxied by Pell grants):
Compare to that at all colleges and universities:
Note that the US News description of Pell grants (“most often given to undergrads with family incomes of less than $20,000”) is kind of misleading; tests with https://fafsa.ed.gov/FAFSA/app/f4cForm indicate that Pell grants are available up to incomes closer to the median household income in the US (although the maximum amount of Pell grant is only offered to the lower income range). Keep in mind that most elites have about half no-financial-aid students, meaning from top 2-3% income or wealth families.