Jay Garrick was originally introduced as the Flash of Earth Two until it was later revealed to be a charade as Jay's name and mantle was taken by Hunter Zolomon/Zoom, who took the real Garrick from another Earth to be Zoom's prisoner.
Wallace F. "Wally" West (born 1995/1996) is the son of Joe and the late Francine West, and the younger brother of Iris West. He was a champion drag-racer under the alias "Taillights". He was born after Francine had separated with Joe, having left him and Iris, so he was brought up without a father or sister.
This version of Flash was seen in an episode of The Flash (2014) as Barry, Dr. Harrison Wells, and Cisco Ramon travel through the multiverse, implying that this Flash lives in a separate universe in the Arrowverse and is a parallel universe counterpart of Arrowverse's Barry's father Henry Allen.