It depends on how you define influential. I'm inclined to give the crown to 3e, just because it was a big enough deal that Pathfinder was able to survive for a decade (and claim the top slot for part of that) just on the basis of "more 3e", though you might argue that to be a result of 4e's failure as much as 3e's success. 5e is quite popular, but I'm not sure how much of that is the game itself, versus things like Critical Role and Stranger Things driving D&D back into the cultural consciousness.