horse_race_tests
Twitter account that posts simulations of horse races (which work more like bouncy balls trying to get to a goal).
Started recieving Umamusume-like fanart after a surge in popularity.
Horses:
Orange: Jovial Merryment
Red: Resolute Mind Afternoon
Blue: Bullet'n Board
Grey: Downtown Skybox
Pink
Yellow
White: Superstitional Realism
Brown: Door Knob
Cyan