While the bottom three are pretty bad stereotypes, there is truth to the one about "young attractive gay men." Most young men, regardless of sexual orientation, are either promiscuous or wish they were. A young gay man wants sex just as bad as a young straight man does, and they're both equally likely to cheat on their partner. Only with young gay men, you've got two partners doing this instead of just one. Not saying women don't cheat as well, but we all know the ability to reproduce, etc; explaining why women are more promiscuous than men. Other than that, what you said is spot-on.