In almost any bookstore, you’ll see today’s bestsellers front and center. What you won’t see: ghostwriters who make a living writing the books “authored” by celebrities, CEOs, and politicos. “Invisibility is my superpower,” says Joni Rodgers, who lives 300 steps from the Pacific Ocean on a remote peninsula in Washington State, far from the glamourous worlds she writes about. She’s an EGOT ghostwriter, having worked with Emmy, Grammy, Oscar, and Tony winners. She’s also collaborated with a variety of cultural change agents, entrepreneurs, and extraordinary “folks next door.” Now, Rodgers is ste…