I think I have seen some variation of aircombo land H PB work on just about everyone, really.
As for lighter characters, you get the best damage off them with FB pilebunker loop because sometimes they float too high for aircombo. It seems logical to just do like, H SJC j.H>j.D>j.2K>j.K land H FB pb against everyone as long as you have them near (pilebunker will hit from like, really far.) the corner. I'd really rather be doing pilebunker than extending my aircombo and possibly fucking it up.
LOL FB PB loop is like, the only way to get big damage against Pot.