Emboar- Emboar can learn Electric type moves, but only Wild Charge and ThunderPunch. But, they are some decent moves: both have an accuracy of 100, but Wild Charge has 90 power, almost like a mini Thunderbolt with a recoil damage based on how much you've done to your opponent by a ¼.
Swanna- Unfortunately, Swanna cannot learn any Electric type moves. but since it is part Water, it can probably be a decoy if you want to heal your Pokemon or something like that since it has a good resistance against it (I'm terrible, I know).
Lucario- Lucario can learn ThunderPunch, but that's the only Electric type move that can actually do damage. It still has a solid 100 percent accuracy, so it's really not that bad of a move anyway.
Haxorus- Haxorus, like Swanna, cannot learn any electric type moves. It can learn Grass Knot, though, but if you're going against something as small as a Psyduck or Masquerain, then it's not the best choice in the world.
Zoroark and Exadrill- Just like Haxorus and Swanna.
Hope this helped!