Forbes lists are largely a status symbol for the 1%, but as the business publication has expanded its purview — and as the music business has grown legit billionaires — its lists and criteria have grown. Pegged to its four-year-old Iconoclast conference is an “Iconoclast 50” list released on Wednesday, and its vague criteria — recognizing “leaders in finance, business, technology, media, entertainment and philanthropy that are changing the game in real time, disrupting their industries and