I actually think the bolded are two very different things and would actually produce different lists.
Knowing a name and recognizing a face can be very different. I, for one, would not be able pick out QE2, Pope Francis, Modi or Xi out of a police line up of similar faces. Without Google, I really have no idea what any of them look like since I know all of them from reading not watching. Recognizable names I can see Xi, Modi, QE2, Trump being at the top.
But I think recognizable faces would yield very different answers and most world leaders wouldn't be on that one. The World Cup is the most commonly watched cultural event around the world so maybe CR and Messi would be the two most recognized faces around the world. I could certainly pick out Jackie Chan face over QE2 or Modi face.