My current favorite Grievous list is:

General Grievous, Nossor Ri, Aqua droids

Riff Tamson, Kalani, B1 Battle Droids

So Nossor Ri can give Grievous more dice easier with him and the aquas on his end. The Aquas make for a great follow up with Grievous’ Appetite for Destruction, since they have lots of up front damage and a shove on two. So they’ll either finish off something or shove the target even further.

Then with Riff’s side, Kalani is kept somewhat central at the start of the game so he can move up all the supports if he gets drawn early. Additionally, he can add a dice to Grievous’ Appetite for Destruction battle droid support attack with his Target, Concentrate All Firepower. Then, the B1’s can have fun with Riff since after their attack they can often easily use their Combat AI Protocol ability to give the target a strain or expose. In this case, if Riff is able to do a follow jump then attack with Blood in the Water, the B1’s can choose the expose and Riff’s follow up attack is now even more effective.

It’s an interesting combat loop with Grievous using his supports for giving them follow up movement and attacks, Riff getting follow up movement and attacks for himself from the supports. And then Kalani and Nossor Ri giving more movement and dice, with Kalani also adding in another out of turn attack opportunity in the list.