Some of those colleges’ scholarships are not specifically limited to low income or minority students; they are just merit scholarships (and one does not have to be black to attend a historically black college).
https://www.pvamu.edu/faid/types-of-aid/scholarships/university-scholarships/
https://www.tuskegee.edu/programs-courses/scholarships/freshman-scholarships
https://www.aamu.edu/admissions-aid/financial-aid/scholarships/index.html