Ti base cloth seats are not powered. Ti package leather seats, driver's side is powered, passenger's side is not. There is also a difference in the shape and bolstering between the cloth and leather seats. Some people prefer one, some prefer the other.
I will say the dark leather seats get quite hot in the sun, I speak from experience.
Note you can not put seat covers on these seats as they all contain airbags (in the seats, yes) that may need to deploy in the event of an accident. so don't think about getting leather seats and putting a cloth cover on them.
Rear seats, cloth and leather, fold flat if you have the 60/40 split (depending on trim level, model and packages chosen).
Personally, I am not impressed with my electric driver's seat, it is very slow to operate. I'd much rather just have a quickly adjusting manual seat. You have to put the seat pretty much all the way forward if you are going to fold the rear seat flat, then back it up (it will not go all the way back with the rear seat flat). the passenger side can be done in 30 seconds, the driver's side will take a few minutes. if you infrequently drive with passengers in the rear, just leave the headrests out, then you don't have to worry about putting them in/taking them out often.