This Michael Jackson foto contains
fedora, vilten hoed, homburg, cowboyhoed, trilby, fedora met vilten hoed, stetson, porkpie, porkpie hat, porkpie hoed, bever, and castor.
There might also be
cavalier hoed, slappe hoed, slouch hoed, sombrero, merg hoed, merg helm, zon helm, tropenhelm, topi, merg hoed met merg helm, and topee.