There isn’t a great amount of consistency. I’ve never seen or owned an Akubra that I’d call floppy, at least not one that wasn’t very well-used. Some have a fairly soft hand/finish, but the felt has mostly been of the firm variety. That said, I’ve owned Imperial grade Campdrafts that had vastly different felt. if you don’t mind a raw edge, like the Fed IV, why not find a used western in your size and cut the brim down? You can have a fedora with the stiff western felt you want.