This Chandler Riggs photo contains
boater, leghorn, panama, panama hat, sailor, skimmer, straw hat, fedora, felt hat, homburg, stetson, trilby, porkpie, and porkpie hat.
There might also be
campaign hat, snap brim hat, dress hat, high hat, opera hat, silk hat, stovepipe, top hat, topper, and beaver.