Tron: length 3169.3 feet, manufactured by Vekoma. Should be same as Shangai's Tron.
GoG: 5577.4 feet, duration 3:10, also a Vekoma, elements: Dark, 2x Booster Wheel Lift Hill, LSM launch.
Hagrid's: 5053 feet, Height: 65 feet, LSM Launch, 5x LSM boost, vertical rollback, Vertical Drop Track w/17foot drop, LSM Launch (rolling), manufactured by Intamin.
Cosmic Rewind isn't super intense, but the large screens are potentially a bit disorienting. One trick is simply to avoid watching them. Avert/close your eyes for short sections of the ride if they bother you.
For GoG, try to relax and enjoy the soundtrack. The ride moves in sync with the soundtrack, and is very smooth. IMO, it is even smoother than Hagrid's.
7DMT and EE are also Vekoma, though EE dates to 2006. (So not as smooth as newer coasters.) Velocicoaster and Escape from Gingotts are both Intamin.