1. Swampert
Water/Ground is one of the best combos in the game and water and ground are both very important types to have, even better in one mon that happens to be so great, base stats are decent (its basically Incineroar), movepool is limited but it gets just what it needs, waterfall/liquidation earthquake icepunch/avalanche stealth rock should be its mandatory set, with evs all on hp and attack and holding leftovers.
2. Aegislash
Steel/Ghost is also another broken type, and this is also a very unbalanced mon, it can use both physical and special sets very