I think most people who do this will be furthest from Trump simply because he's the furthest to the right on their grid.
There's no way Obama is close to the middle on the populist/elitist axis on their scale. What he said was often left-populist but how he governed certainly wasn't. He was quite elitist, in bed with the Washington insiders, lobbyists, big corporations & corporate donors etc. Trump is a reaction to what he and his predecessors have done or failed to do the last 40 years.