Enrique Peņa Nieto, Justin Trudeau, and Barack Obama were literally all leaders a half-decade ago.
Saying this with the implication that any of these people are remotely left-wing is peak Blairism - specifically, the weird post-2007 becoming-a-cranky-Tory-in-retirement Blairism. When Tony Blair was in power, he was significantly to the left of all three of these. That is something both he and his current supporters, all five of them, seem to have forgotten.
They are all out of the respective political left wings of their own countries; ergo they are left wing. You can debate whether they're properly leftist or whatever but that would be pointless. Given a binary choice between these politicians being of the political left or the political right, they're all very obviously of the former.
Also, bringing up an irrelevant tongue-in-cheek username instead of actually responding directly to the substance of my claim is...lol.