X and S have similar air suspensions with the XSUV being beefed up a little to offer higher ground clearance, off road capability, towing and additional carrying capacity.
Both are in 3rd generations. 1. Air suspension. 2. Raven adaptable air shocks. 3. Adaptive air suspension Plus with faster adaptive capability.
3 and Y have similar coil suspensions with the Y SUV being beefed up offer slightly more clearance and off road capacity.
Sedans are lower, weigh less plus more nimble handling.
SUVs are higher, heavier, less efficient but more capabilities.