Also not there yet, but technically isn't Schilling's only RC in 1989 Donruss.
Two more "maybe somedays" are Kevin Brown (1987 Donruss) and Kenny Lofton (1991 Bowman, also appeared in 1991 UD Final).
And yeah, the Beltran...he'd also have the only HOF RC on which he doesn't actually appear, right?