Late chiming in on this.
Things I don't ride at WDW due to motion sickness: Remy, Mission Space, Star Tours, and Flight of Passage.
Things I can ride if I make accommodations: Teacups, Rise of the Resistance, Mickey and Minnie's Runaway Railway, Millenium Falcon: Smuggler's Run.
Cosmic Rewind was really unusual for me...a hybrid, of sorts.
I can ride it fine with my eyes open. No nausea at all.
What I do struggle with is dizziness after the ride, so I sit on the benches at the exit until I have my equilibrium back and use the elevator to go back to the ground floor.