I think Babur(or Akbar), Rajendra, Devapala
I really hope they take the effort to add new skins for old scenario editor heros (Genghis Khan, Tamerlane, etc) and a slate of new Indian civilisational heroes with unique skins. This is a bigger DLC than the past two so I hope they will capitalise. Including regional monks too. Makes sense to add a Indian monk set now.
No devapala,Mahipala instead.