The only roller coaster I can ever remember having gotten even remotely close to motion sickness on is Poltergeist at Six Flags Fiesta Texas in San Antonio.
I just call it "Spaghetti"...!!!
View attachment 204042
You are being flipped, flopped, turned and twisted all along the entire ride. The part that gets me is the the sharp turn into a double corkscrew right at the very end just before the coaster is braked. Has never left me more than a bit dizzy for more than about 30 seconds, so the ride is sooo beyond worth it...!!!!!