Electronic Arts for Powerdrome and (I think they did Indianapolis 500) I always thought indy 500 was very impressive
EA might have been a distributor on Indianapolis 500, but it was the first of a very long chain of severely excellent driving simulations written by Papyrus Software. A developer I miss greatly. (Though some of the team and source code lives on with First and iRacing.)
Anyhow, again, +1 to Bullfrog, Team 17, Psygnosis, Geoff Crammond, and Digital Illusions. All legendary status on Amiga.