I'm just going to put this here so people don't get confused in the story about who's older than who. This is just my idea of the ages, and it's not canon at all (I think). Just refer to this if confused!
Jack, Mush, Race, Albert are the four oldest newsboys (that are going to be included in this)
Specs and Finch are a year younger.
Crutchie, Elmer, and Buttons are two years younger.
Romeo is three years younger.
Henry is the "baby" at four years younger than the oldest.
That's probably still really confusing but just try to understand it!
FINAL AGE ORDER
Jack, Mush, Race, Albert, Specs, Finch, Crutchie, Elmer, Buttons, Romeo, Henry