Quick answer — Hirohiko Araki worked on STEEL BALL RUN JoJo's Bizarre Adventure 1st STAGE (Original Creator), JoJo's Bizarre Adventure: Golden Wind (Original Creator), JoJo's Bizarre Adventure: Diamond is Unbreakable (Original Creator) and 11 more anime.
Hirohiko Araki worked on STEEL BALL RUN JoJo's Bizarre Adventure 1st STAGE (Original Creator), JoJo's Bizarre Adventure: Golden Wind (Original Creator), JoJo's Bizarre Adventure: Diamond is Unbreakable (Original Creator), JoJo's Bizarre Adventure: Stardust Crusaders - Battle in Egypt (Original Creator), JoJo's Bizarre Adventure: STONE OCEAN Part 2 (Original Creator), JoJo's Bizarre Adventure: STONE OCEAN (Original Creator), JoJo's Bizarre Adventure: Stardust Crusaders (Original Creator), JoJo no Kimyou na Bouken: Phantom Blood (Original Creator) and 6 more.