I found this picture of various hats all allegedly marketed on various web sites as Fedora hats. But they look so different to me, would you guys who happen to know more about this subject than me agree that they are all Fedora hats? If they indeed are, how come they can look so different and yet be called the same? If they aren't all Fedoras, which ones aren't, and which ones mostly resemble a "true" Fedora? I'm pretty new to hats (although I've liked hats all my life) but I'm curious to learn more.