There are basically two styles – Inside out, or Outside in.
“Inside out” shows are first fueled by the people in the Control Room thinking “What interests us will interest the Listener.” Maybe, but these shows are often asleep at the wheel in terms of welcoming in new listeners.
“Outside in” shows are a bit more interactive in terms of listener participation (getting more phone calls, social media response, etc.), but you’d better make sure that you engage people emotionally. As a listener, a “topic” that doesn’t touch my life is a waste of my time.
Either philosophy can work, but either type can fail, too. The key? Content choices, of course. It might help you to remember that merely “interesting” is never the same as Compelling.