So The Nobodies didn't make the cut?
Troup makes it sound like Dancers and no-one will get the strictly literal and correct connection to Wallabies but most know a Mob is Kangaroos, but Mob is therefore a League term not a Union one. 23rd Man doesn't sound like a Supporters group to me, it sounds like an individual (although I have to admit I didn't get the significance of a 22 man squad anyway, bit of knowledge that skipped my brain), Wolf Pack has no connection, The Vault and the Gold Mine sound more like a brand for a knowledge based resource like a website or wiki, not a fan club of people.
John Eales, or Nobody ('cause Nobodies Perfect), is one of our most famous Wallabies and was a bloke who, in terms of character and conduct, also epitomized the spirit of Rugby in my view. His "brand recognition" crosses multiple generations from kids to old timers and he has acheived all of the highest accolades the game can offer. He was universally respected by other teams as well. The Nobodies. I think it sets the right tone for a Rugby supporters group.