It's funny how sometimes stereotypes seem accurate, sometimes not.
Kimi is "The iceman" but if you have followed his entire career, you will see he is as hot-headed a driver as F1 has seen. I have no idea where the nickname comes from, other than his drone personality when he's not driving an F1 car.
Then Vettel is supposed to be the cold blooded, methodical German. Guy is incredibly hot headed and easily made excitable. When he's in that frame of mind, he is liable to do anything that is really stupid.
Then you have Fernando Alonso, the "fiery" "temperamental" Latin from Spain. Freddy has been as calm and cool throughout his entire career as any driver I have ever seen. He is enormously calm, confident, and in control even in the heat of battle in a race.
So much for stereotypes!