The Flash Family is the best part of DC
You've got...
Jay Garrick: The cool, golden-age grandpa who punched Nazis and ran so the others could run faster.
Barry Allen: The silver-age, funny one who took something great and made it better.
Wally West: The modern legacy character who introduced the concept of the Speed Force.
Bart Allen: The wild child grandson from the future who gets on everyone's nerves in an oddly charming way.
Max Mercury: The tired guardian of aforementioned wild child who expanded the concept of the Speed Force.
Irey and Jai West: The twin kids of Wally with speed and strength powers respectively.
Johnny Quick: The scientist who unlocked the Speed Force with the power of math.
Jessie Quick: The prodigal daughter of Johnny Quick and Liberty Belle who inherited her dad's speed and her mom's strength. Kind of a snob but not unbearable.
Wallace West: The New 52 Kid-Flash (Bar Torr does not exist. Fight me) who was hated at first, but then got better writers.
Avery Ho: The Flash of China from DC: Rebirth who brought some culture to the family.
Judy Garrick: The Boom who was retconned as the golden-age sidekick of Jay, but got lost in time and brought to the future.
