Status Updates From The Nine Old Men: Lessons, ...

Marc Davis: expert on animal anatomy, worked on Snow White, Maleficient and Cruella before joining the Imagineers

John Lounsbery: humble, quiet, in the shadow of Milt Kahl later. Died during The Rescuers?

Ollie Johnston: stopped animating after The Fox and the Hound. Became a teacher.

Frank Thomas: retired afterduring The Fox and the Hound. Wrote many books with Olli Johnston. Rarely made golden keys, every drawing was important. Went to South America during the strike in 1941

Milt Kahn: I have to rewatch The Jungle Book to see that tiger with new eyes

Ward Kimball: experimental, became a director when Disney focused on realistic characters. Retired in 1973 Animated Lucifer, the Reluctant Dragon, the Mad Hatter and many others

Eric Larson: You can feel that the author liked him a lot. He became head of the training program after The Aristocats (he animated Rockefort the mouse)

Wolfgang "Woolie" Reitherman
Again, I would have liked more personal information about the animator. He went to fly planes during WW2 and came back to Disney in 1947, that sounds super interesing, but there's only a quick mention and we move on.
Woolie became director, unclear if The Rescuers was his last movie or not.

First part is about Les Clark. The author didn't mention if Clark retire, or anything about his personal life (date of birth, married, deceased, etc.) I've watched a few of the shorts mentioned.