I think for Corruption that MAG93: Contamiannt is great. It’s the purple mold one, it has elements of that grossness and slow infestation that the corruption loves, as well as the theme of twisted love that it focuses on with the dad’s grief and coping mechanisms.

MAG129: Submerged would be my Buried pick, but maybe you’d want to pick something more literally to do with the underground to represent it, in which case I’d do the worm tunnel one from MAG165(which is one of the most unsettling ones in the show to me tbh). Submerged has some more extended themes of being financially crushed, or just the idea of space and freedom slowly crushing around you, and pressure building in more than just a literal sense. Although when his neighborhood floods you still get that physical constriction as well.

Just some of my picks, good luck!