I find I have a lot of time on my hands, and think that a Bro Tribute is long overdue anyway.
"Goofy Bros".The popped collar, a staple of the American Bro.

"Badass Bros". Along with the ridiculous fake tan (which
is a staple of Bro-ness, although usually not seen at this extreme of a level), you can see two examples of classic "Bro-Hawks".

"D-Bag Bro". This was actually an engagement picture. This guy had to forego receiving "Brossages" (a Bro massage) from his "Bro Chick" for a week in order for her to be okay with the popped collar.

"Unidentified Bro". Caught in a candid moment, it's impossible to tell exactly what this species might be. But given the popped collar and flip flops with long white pants, it's definately a Bro.

"Political Bro". A combination of many different types of Bros, this particular species' most pronounced features include many shared with the "Badass Bro" (100 years in Iraq? Seriously? You thought it was a good idea to vocalize that?), and the "D-Bag Bro" (I don't know if I've ever seen someone roll his eyes as much as this guy did during the debates).