Good grief, none of those are as easy to fly as an Ercoupe. Students have started from scratch and soloed in a day in them - was kind of a big deal in the 1960s, fair amount of magazine coverage each time someone would do it.
A Citabria easier to fly than any nosewheel airplane? What are those folks smoking?
Cherokee 140/180, series are all easier to fly than a 172, the rudders don't need to be used in flight and you can bang them onto the ground out of almost any kind of approach. A 172 requires a little skill.
I'm with Rick on this one. Ercoupe 1st, easy choice. Besides no rudder pedals, some don't even use a mixture control. Turn the key and fly, just like a car.
