Thanks, but I should have exaplained better, I meant I was curious how many third party figures there are.  Just recently I keep seeing quite a few pop-up and I've never even heard of them or seen them promoted in any way at all.

I only see one by accident or when someone asks something about one on the forum.

Here's a link to a wiki for Poser/Daz Studio that lists most, if not all, of the currently known Human figures (and also lists for non-human figures as well) from both main sites and 3rd party sources... it includes links to find them all... the list contains both free and paid figures I think, but is fairly extensive...
https://poserdazfreebies.orain.org/wiki/Figures