Interesting ... So -amorous is like the theory (how many people you're in love with), while -gamous is like the application (how many people you're actually in a relationship with).
I thought it was also interesting you have swingers in both the monogamous and the monoamorous category. It of course makes sense based on your general theory.
Polyfidelity, then, being in both the polyamorous and polygamous group, is almost like the opposite of swing! (though with a lean more to the polygamous direction.)
I'll probably post my take on the whole thing in about a week (still turning things over in my mind,