We've been reading a lot recently about LGBT couples having trouble giving their wedding parties titles. For instance, if a bride includes men in her wedding party, they are neither groomsmen nor bridesmaids.
Our suggestion is simple; make it your own! Your wedding day should feel unique, special, and completely your own. Calling them "Courtney's Crew" or "Ben's Brood" makes it fun and personal. If you are going for a more formal feel, calling the party "Honorary Attendants" or even just "The Wedding Party," keeps things neutral, but structured.
Ultimately, these are the people who want you to be happy and surrounded by love. They probably don't really care what you call them, as long as you are content with your wedding.