You've downloaded the list and the pictures, now make your life even easier with a brief description of what makes each person so influential. Each description also includes birth and death dates of said individual.
I use this for bell work on Mondays (our #MCM! - man crush Monday). Over the course of the school year, we've discussed about 35 influential individuals in world history.
Consider taking the numbers off each one and have your students rank them (or small groups of them) in advance to see how close they get or to justify a new order!