This Elvis Presley photo contains
snap brim hat, campaign hat, boater, leghorn, panama, panama hat, sailor, skimmer, and straw hat.
There might also be
cavalier hat, slouch hat, pith hat, pith helmet, sun helmet, topee, and topi.
@RemasterGroup -I did some EQ, pitch correction and a slight reverb to make it sound more authentic. I think the result is pretty good considering the well-known quality from the soundboard recording.