Most deserving actor of bollywood to win an Oscar?

I don't think anyone has won an.oscar from India so far for acting 

May be some movies got nominated for Oscar like Slum dog millionaire

We have quite good actors like Irfan Khan, Nawazuddin Siddiqui and in Ranbir Singh who have all potential to win Oscar if they get nominated in good projects.

I think Irfan khan and Amitabh Bacchan can win Oscor.

Well, Bollywood too has many fine Actors nowadays and therefore it is hard to decide who's better actor.

Following are my list of actors who are supposed to be nominated for Oscar:

Aamir Khan,

Vicky Kaishal,

Ayushmann Khurranna,

Pankaj Tripathi,

Rajkumar Rao,

Nawazuddim Siddiqui, 

Paresh Rawal.