A nice post on Mostly Economics on next week's announcement of the prize. Their list below of favourites seems a good one though there are clearly others one could add (Ernst Fehr, Angus Deaton, Richard Easterlin being names mentioned in different lists that are most relevant to the type of work we discuss here). Jean Tirole is also someone that must be on a shortlist somewhere. If I were to take an outside bet, the philosopher Jon Elster is someone who has had a big influence. Dont think its likely but, having said that, the committee has gone for people before who have influenced economics while primarily being based in another discipline.
"Jagdish Bhagwati, Avinash Dixit for international trade
Robert Barro, Paul Romer for growth economics
Oliver Hart for Transaction economics
William Nordhaus and and Martin Weitzman for Environment Economics.
Eugene Fama and Kenneth French for Financial economics
Robert Shiller and Richard Thaler for behavioral economics"