So what you are saying is that slaves and the children of slaves and Indians cannot be eligible for President.
Both of those groups were excluded from being considered citizens at the time of the drafting of the constitution. Any citizenship conferred in contradiction to the established meaning at the time of the drafting of article II would not be given Natural Born status.
Good thing Obama wasn’t descended from slaves.
Actually, what’s being said is that anyone must have a father considered a resident, committed to the USA, to have been considered an NBC in that era. That would apply across the board as if slaves hadn’t existed.