According to Legion Of Super-Heroes #14
row 1: Element Lad, Chameleon Boy, Brainiac Five, Lightning Lass, Timber Wolf, Shadow Lass, Mon-El, Dawnstar
row 2: Shrinking Violet, Colossal Boy, Sun Boy, Phantom Girl, Ultra Boy, Wildfire, Starboy, Dream Girl
row 3: White Witch, Invisible Kid, Blok, Magnetic Kid, Polar Boy, Tellus, Quislet, Sensor Girl
row 4: Lightning Lad, Saturn Girl, Cosmic Boy, Duo Damsel, Bouncing Boy