So, I got to wondering: How many stories are there where someone other than the Kents finds and raises Kal-El?

I know there's one with the Langs and one where he and Lois swap parents, but what else have we got?

I wrote Specimen S, in which Trask's father finds the ship before the Kents. He raises Kal (known as Specimen S, or just S) to be a super-soldier, but S escapes...

The last of these drabbles starts out something like that, but be warned, it isn't a happy story:

Five Crossovers That Never Happened to Lois and Clark

One of the best fics I've read from this perspective is a "Smallville" fanfic. It's "Elsewhere" by bulbus. Be warned, it's rather lengthy, but it's very well done.