A FEW YEARS AGO, Chris Black reached out to Max Stein, whom he’d come across years earlier when Stein was a downtown scenester and self-described “loyal devotee of the late-era Beatrice Inn.” In the intervening period, Stein had refashioned himself as a manager for a certain kind of multi-hyphenate tastemaker. “I was like, ‘Hey, I think we’re leaving money on the table,’ ” Black says. “And then he called me and was basically like, ‘You are.’” Black is a co-host of the How Long Gone podcast, a creative consultant for various clothing brands, and a magazine columnist, which made him a perfect client for Stein. “He’s a manager for people who don’t really know what they need managed because they’re sort of strange creatives,” as one fashion writer puts it.…