This Old Yeller photo contains
boater, leghorn, panama, panama hat, sailor, skimmer, straw hat, fedora, felt hat, homburg, stetson, trilby, and campaign hat.
There might also be
dress hat, high hat, opera hat, silk hat, stovepipe, top hat, topper, beaver, green beret, special forces, elite soldier, pith hat, pith helmet, sun helmet, topee, and topi.