Usually, lower end GE dryers had a separate 20 minute "Fluff" cycle marked with a diamond-shaped symbol on the dial. That was a carry-over from the no heat Sprinkle cycle with the water drop symbol. It looks like these two models offer two positions on the heat switch, but I cannot see if the selections are high and low heat or heat and no heat and I do not remember seeing GE dryers with that choice. Maybe because the timers allow the extended time for 115 volt operation, there was no room for the "Fluff" setting.
As to the fate of the design, I wonder if the all plastic control panel was deemed a fire hazard because it had no metal shell to enclose components that could possibly burn and instead of having a metal shell at the back, sides and top to keep flames away from the wall, it would just add fuel to the fire.
I was initially puzzled by Westinghouse dryers with pushbuttons for heat selection that started at high or Reg and went down to "NO".