Who has said that transformers is the scariest? And why? Close your eyes and much of the motion goes away. Look around and it’s easy to see your on a ride.
Same for Simpsons; look around and you can see you’re in a big movie theater like Soarin’. Close your eyes and almost all motion is gone.
For me the pteranodon ride is the scariest. It’s so slow and gives me lots of time to imagine the ride failing and us falling to our deaths. Doom is next; my imagination sees the failure happening at the top of the ride and us arcing out and up and then finally starting to fall.
RRR terrified me on my first time, and I had to calm myself after the fact by googling how the ride keeps you in place. Now that I know, I really love RRR.