Most of the regular crew gets a sleeping bag in a cupboard with some small locker space for personal effects.
Wilmore has just the bag, off in the Japanese module. And I guess he has to store personal effects in the Starliner. Though presumably he only packed for 8 days.
In climate controlled zero gravity, there’s no point to having more bedding than a light sleeping bag just to keep you from floating off somewhere. My guess is the big selling point on the cupboards is some noise damping, and maybe some protection from lighting. Spacecraft have noisy machines running all the time to keep you alive