I've used a ton of commands, but the one's I have on atm are the following:
1. Gravity Drop
2. Judgement Triad
3. Shock Fall
4. Aerial Slam
I have many many other commands, and I don't know exactly what mixes with what.
I'm also at LvL 70, I have Lion Heart Keyblade equipped and maxed out, and then I have the Immortal Charm, Heat Sink Belt, Half-moon Armlet, and Blizzard Charm equipped.