DC has always been stubborn in terms of giving away the ages of their characters, but have there been any hints about which Leaguers are older and younger than others?
Here are all the clues I can gather
-Bruce Wayne was 26 when he started his career as Batman according to Batman Year One
-During the 80s and 90s, Oliver Queen and Hal Jordan aged more rapidly than their peers in the original Justice League. Queen turned 40 years old in the Longbow Hunters, and Jordan gained white streaks of hair in his 90s ongoing. This might insinuate that Green Lantern and Green Arrow are older than most of the original League.
Dinah might be the oldest in the current continuity due to Wonder Woman 750 retconning her to be actives during World War Two. This was NOT the case in Earth One, Post Crisis, and and the New Fifty Two.