The Maze Runner Wiki

Majority of the Gladers that stayed in the Glade are loyal to Gally. They all stayed after Thomas escapes the Maze with Teresa, Newt, Minho, Frypan, Chuck, Winston, Jeff, Jack, Tim and Billy. Some of the Gladers that stayed behind are in the Death Cure film, but the rest of the Gladers either died or survived with the rest.

Though many Gladers stayed behind, some of the Gladers might have wanted to go with Thomas. Example, Carl was looking at the Gladers that left in regret not joining them. Unnamed Glader 13 actually walked to join Thomas, but backed away when Gally told him not to listen to Thomas.

List of Gladers who stayed behind