Status maybe. The guy with the two monitors is probably doing most of the heavy lifting, and his manager with just one screen in his office watching him remotely or behind his back. The guys with the laptops, they're the engineers who tell everyone how the spreadsheet says everything is great while there's actually a fire. Which is what the guy with the two screens is doing, trying to figure out how to put it out.

Importance is not labeled, but it's on the x axis, increasing from left to right.