heres my list
meteor storm
tornado storm
mist call
With the Meteor storm, we didn't get that because it is ONLY Alduin who uses it and he's not one for sharing his power with the mortals he loathes.
Tornado storm, personally I think that would be too powerful, and the Dragonborn is already slightly overpowered if you ask me (not that I'm complaining lol) Although I could see it as maybe an added word to Storm Call
Mist call would be REALLY interesting, calling a massive cloud of mist that renders you invisible allowing you to take out your opponents slightly and disappear without a trace. One thing I will say is, that it should definitely come with a detect life effect so you can see the targets enshrouded in your mist.