Yes. I agree.Evra was the first player I thought of when I read the title, I think mentality plays a big part. Being fearless when attacking the ball is probably the most important thing
Ronaldo was always great in the air, he scored a bunch of headers even as a teenager. See Euro 2004 for example. He improved as he got physically stronger but he was already good at it.
He always had the natural ability as a youngster he just improved as he developed as a player.
Someone above mentioned he was shit then got good is speaking out of his bum.