Devices that can slowly lower and raise 200 pounds ~2 feet?
Cam and follower

Gears

Hoist

Lever

Linear actuator
Ball screw

Hydraulic cylinder

Jackscrew

Leadscrew

Linear motor

Pneumatic cylinder

Rigid chain actuator

Rigid belt actuator

Roller screw

Segmented spindle

Telescopic cylinder

Winch

Scissors mechanism

Windlass

Weightlifter