Maddux says he was throwing 94-65 when he started in pro ball, I had not known that. Pete Smith tells me he was a thrower before his injury and surgery and had to learn to pitch then. When he came up to the Braves, the pitching coach gave him a week to learn to throw a change up.
Then he taught me how to throw a circle change and I've gotten pretty decent at it. My problem is I change speeds from about 60-65 to about 50-55.
Spencer Strider is a definite thrower though he has a nice slider, but no dependable change.
Two of the best pitchers of our time threw 90-91, changed speeds, and located, and Tony Gwynn hit them anyway.