I would see them as Power Clean Filter modules. The upper model would be a rapid advance timer, stainless steal tank and door liner, back water distribution system, Pots and Pans, Heavy, Normal, Light, China and Rinse only cycle. Blower assisted dry.
The lower version I would see as a plastic tub, back distribution system. The knob would have Heavy, Normal and Light start demarcations. The push buttons would add or over-ride thermal holds.
Tuned sound damper on both motors. Solenoid actuated dispensers.
Cycle sequence for both models from Pots/Pans and Heavy would be Wash-Rinse-Main Wash- Rinse - Rinse - Final Rinse- Dry. 2.25 gallons per water charge. 13.5 gallons total.
I am debating the wash if of having 3 washes- an open cup and two closed cups, though I can't see such a great need in a power clean. I wouldn't keep the roto rack design. I think Whirlpool had a good upper rack in latter productions.