a search for "triads" "vees" "unicorns" might help too.
There are many different forms of poly, I don't think that there is one sort that is a bigger population than another. People travel in different circles and in different ways. I know tribes that are just bust doing their thing and have no need to talk about it or offer advice to others... usually on line we hear from people who are looking to fill their poly goals, people just starting out or people who are struggling. It is in no way a full representation of the poly community.
Anyone want to be friends on Facebook?
Send me your name via PM