Not every canon.

There is an origin story in the 90’s where he isn’t an immigrant from Krypton. And a couple of original drafts have him gain powers through super soldier serums. But all other canon make him an illegal immigrant. The whole 90 years of it.

That is only the story in a couple of comics of the 90’s.

Since its conception in the 30’s, Superman has always been an illegal immigrant from Krypton.

That is a dumb definition.

If what you say were true, there would only be one type of Barbie.