The Elg decision states that Miss Elg was in fact a natural born citizen.
Miss Elg was born in Brooklyn to a father that had been naturalized. Miss Elg moved to Sweden and returned to the United States. She kept her status as a natural born citizen.
The decision stops short of saying she was was a "natural born Citizen" per Article 2, regarding presidential eligibility. It does not address this, nor did it intend to, nor did this case refer to that. It simply upholds a lower ruling that she was a citizen and that lower court happened to use that phrase.
It was undisputed that Elg was born in Brooklyn, NY.
That is a key fact in that case.
The place of birth of The Fraud is in dispute in the cases filed against him.
Elg is not stare decisis in the Odumbo cases.