138th Post Spectacular: A Dwarven Hat Identification Guide

I've been slacking on the painting and the updating but managed to get in some serious progress this week. All that's left on the Rangers is to touch-up the hair, redo the weapon metal (I don't like how it came out) and do the hats. To that end, does anyone know what these various kinds of hats are called/know of some good pictures for inspiration?

This guy looks like he belongs in a Devo video...

This looks like some kind of foppish Renaissance hat?

No idea on the guy on the left, for the right a Keffiyeh?

This guy looks like he's a baseball umpire.

And this appears to be a straw boater...