This WWF Attitude Era foto contains
filzhut, homburg, stetson, trilby, fedora, and stetson trilby.
There might also be
porkpie, porkpie hut, kampagne hut, kampagnenhut, boater, leghorn, panama, panamahut, seemann, skimmer, hut stroh, bootsfahrer, bein, strohhut, livorno, and panama-hut.