It's really interesting to look at all of them and start noticing both physical and personality similarities. High cheek bones. Mischievous charm. Warm heart. Politically aware but show their stances in a "laid back" manner - they aren't in people's faces with their views. Musically talented.
And of course realizing that they've worked together before. Well, except for JDM - he hasn't worked with any of them before that I know of.