There is no such thing as a natural born manager. Like there isn't a natural born electrician, politician or nurse.
There are combinations of skills that make one person far far better than everybody else, for that job. Some adapt existing skills, some learn new ones. But no one is natural born great at anything useful.
Those skills are acquired, either with willed direction from internal intuition or very rarely forced via external environment. But still acquired, not handed down, not born with it.
Can anyone acquire skills and be great? No! No one knows the winning combination of skills. It takes a great factor of luck.
Evidence of this is found in abundance. Ask someone great "How can I make my son be as great as you" and see how tangential an answer pops out. You'd think its because they want to keep it a secret. Its because they don't know.