New Categories of Urban Homosexuals

Queer Eye is looking for men to participate in a special show on gay dating. But they are casting a pretty narrow net, looking in New York for the following types of guys:

• Twink
• Banjy Boy or Latin Flava
• Chelsea Boy
• Bear
• East Village Rocker
• Leather Clad
• Musical Theater Gay
• Hamptons Gay or Guppy

Now this term "banjy boy," is new to me and I didn't find an entry at Urban Dictionary. Can readers help me out in understanding exactly what it is the producers of Queer Eye might be looking for and what the etymology of the term is?