As for your typology of pooping...I think it's best not to encourage you :-)

I'd say that my attitude is best described as follows:

I find it interesting that most of the psychologists I have met do not question their drive at generating categories within the context of our cognitive predispositions to do so. That is, our brains are hardwired to create categories, and once those categories are created, we often fall into the trap of believing they are somehow meaningful.

I'm confident I could generate a typology for poopers.

So, I sort of cringe inside (and I also probably manifest it non-verbally) when I come across research that describes typologies absent what they mean within a social context.

It comes down to balancing whether this is a theoretically/practically useful distinction against these problems. I'll have to cop out here and say we need more research. You'd have to be able to make accurate predictions with these categories for them to be useful.

Parenting?
Studying?
Pooping?

You'd best respond to my comment quickly!

:D