We watched their Christmas Special from a few years ago on DVD. They are simply amazing!
Being an ‘uncultured’ Hick From The Sticks, I looked up some info about them:
https://www.todaytix.com/insider/nyc/posts/10-fun-facts-about-the-radio-city-rockettes-listicle
“All dancers need to be between 5’6” and 5’10.5” tall.
While it might look like their heights are uniform, they all fall within that range. To make it look like they’re all the same height, the taller dancers are in the center and the shorter dancers taper out toward the end.”