On my journey to Philly from Brooklyn for the holidays I stumbled upon a podcast I hadn’t heard of: “Making Oprah.” Ironically, it’s the story of a TV revolution told by Jenn White and produced by Colin McNulty, both of WBEZ Chicago. It’s a captivating story of how a self-proclaimed overweight Black woman took over daytime television and became, I would argue, the most powerful woman in America…