I have some TF ideas about the Clowns, but I imagine them as being distinct from the Dolls or Gynoids in more ways than just cosmetic appearances. They have different MOs and TFs happen for different reasons.



Gynoids want to turn everyone into a Gynoid, to join their Sisterhood so that everyone will love each other and be loved, won't have to worry about aging and build a perfect society together. They know they are the next stage of evolution and they want to share that with everyone. They are united in that purpose.



The Dollhouses as a rule operate on their own, finding (mostly) unsuspecting humans, entrapping them and making them into Dolls for their own reasons with humans generally having little input into the matter and having to comes to terms with it. Even those Dolls that eventually embrace their new identity generally don't want to turn other humans into Dolls (a few weirdos like Lily (who had a Doll obsession even before she decided to become one herself) and outstanding cases like dealing with an asshole aside), it just happens.



The Clowns I'd say are active in converting people and are more individualistic. They are not unified in vision as the Gynoids are and they are not simply along for a ride like sweeps up people like the Dolls are. The clowns band together into groups because that's a winning survival strategy, but they have their own ambitions and plans. Mostly they try to present themselves as just regular clowns that go a level beyond in terms of makeup and costume while others live in seculsion. Their attitudes towards transforming humans varies as well. Some are uneasy with the idea in general, others will (after explaining the situation in good faith) gladly make a volunteer into another clown girl and others will do so in other circumstances beyond that.