I also have no idea, who Zlatan Ibrahimovic is, but I recognized Sarkozy for some reason unkown to me. About Rowan Atkinson: the mole is missing, so it couldn't be him!
The Amy Winehouse drawing looked like Christine Baranski to me. Probably not at the same level of celebrity, but I couldn't get past that. I think it was mostly the eyes, and ignoring the bouffant.
Charles looks like Milton Berle, Monroe looks like Joan Rivers and Collins looks like Bush.
When did Clooney get a monster chin?