The Supreme Court of the United States has never applied the term natural born citizen to any other category than those born in the country of parents who are citizens thereof.
That is because the Supreme Court has never ruled on the meaning of "Natural Born Citizen." The highest court to ever issue a ruling pertaining to this is the Indiana Court of Appeals which said that a "natural born citizen" is someone who was an American citizen at the time of their birth.
Your inability to understand how the SCOTUS works doesn't really change anything.
Your strange phrase: “’A natural born citizen’ is someone who was an American citizen at the time of their birth”, is meaningless. How, in your mind, is it possible to be a citizen before birth?