IIRC, the two-speed dishwasher didn't have a two speed motor, the "gentle" water action was by an aeration valve. GE had two speed dishwashers for a while (also via the aeration method?), I recall neighbors had a portable GE with a "low speed" china/crystal cycle.
As discussed previously, there were Whirlpool dryers with multiple tumble speeds, but not this dryer. Gentle & Super speeds on it refer to airflow rate & heat input (5,600 watts on Super, 4,600 watts on Gentle).