Steven: learns to love himself wholly and accept and appreciate that he is not his mom
Connie: learns to go outside her comfort zone, make friends, and become bold
Pearl: learns to operate on her own and let go of Rose
Amethyst: grew her self-confidence and accepted her place as an earth-gem
Peridot: went from robotic villain to Hero Gremlin 2.0
Garnet: Got Gay Married, hell yeah
Lapis: stopped being a barefoot hippie and got some shoes and pants, thank god, also confronted her fears and trauma
Jasper: has once again, appeared
the diamonds: embraced the family tradition of Crying A Lot and also attempting to not be rule-obsessed tyrannical dictators
Bismuth: embraced the art of making puns