>>58186494It's funny because everything felt like it was Rock/Ground in RBY. And then added Larvitar and Pupitar in GSC and Rhyperior in DP. And I think that was the last one. And they're all slow and really not great mons. A fast, frail one would be pretty good if it had decent stats.
Rock/Fighting would be another one that would be really good. I don't think we have one now but Mega Barbacle is supposed to change to Rock/Fighting. Rock to hit Poison, Fairy, Psychic, and Flying for at least neutral is great. And Fighting hits the Steel, Fighting and Ground neutral as well. Really good overlap. Though it's a lot worse if it has to rely on Stone Edge.
Still that gets BTFO by Ghost/Fighting. That type is insane and has nearly perfect coverage and this is before factoring in the broken signature moves that type combo has access to.