I wasn't familiar with the term 'Glow-Up' but CBR describes it as "The Teen Titans have long served as a proving ground for DC's sidekicks and young heroes before they eventually graduate to full heroics."
https://www.cbr.com/10-best-teen-titans-glow-ups/
10. Tempest
09. Cassie Sandsmark
08. Red Hood
07. Bart Allen
06. Raven
05. Conner Kent
04. Donna Troy
03. Cyborg
02. Nightwing
01. Wally West