Congratulations on your achievements. I can’t chance you but with your credentials and being a URM, your chances are likely higher than that of many other applicants.
With that said, and for others who might read this thread in the future, I sure wish you would have a submitted a supplementary essay. Harvard’s is so open-ended I am certain you could have thought of something additive to write about…how much of a disadvantage not submitting that will be we just don’t know.
Good luck with Harvard and the rest of the schools on your list.