They are called "Type A" personalities.

VOA: special.2009.03.24

"I mean art law is different. You've got different personalities, you've got families that have suffered in the Holocaust.

VOA: standard.2010.07.26

The substance of this summit on Libya's Mediterranean seacoast has been largely overshadowed by the personalities attending, and those who are not.

VOA: standard.2009.07.02