I know that in Italy (and many Italians here that are from Italy, too), if a child being confirmed asks a man to be their sponsor, that man is considered another Godfather to the child. The child may choose his Godfather that baptised him, or may choose another.
Exactly.
More often than not an Italian American boy might refer to his Confirmation sponsor as his "Goombah," or something equally as familiar and affectionate.