Polyamory is a little bit of different to what you're describing, OP.
Polyamory is forming romantic relationships with multiple people.
The rest is just good fun.
I know a reasonable number of polyamorous people and have been in one such relationship myself. I'm all for people doing whatever makes them happy, but for me it always seemed like a quantity over quality type of deal. They all "love" everyone which to me dilutes it immensely - they say it like you'd say it to a good friend...actually maybe not even to that level.
The poly relationship I was in, the "poly" part never really came into play for me. I banged plenty of other girls but never had any interest in forming relationships with them. She would go off on dates which gave me time to myself, which I was quite happy for. It never bothered me, but I never saw her as a life partner.
My current relationship I do see as a life partner and whilst we are monogamous, we're both kinky degenerate hedonists and proud. Dogging, threesomes, adult cinemas etc. Sex is something we do for fun, it doesn't represent our love for each other or have any real meaning. So we have our fun, but have no want for establishing emotional connections elsewhere.
Outside of relationships I've done just about all of it - gangbangs, swinging, hotwifing, etc. My favourite role to play was always the Bull - great fun. However I've never had an interest in cuckoldry from either direction - that's something that some people might not understand, the way that cuck shit is it's own thing entirely and that these situations don't automatically mean that's what it involves.