The name 'Bloomberg' will be familiar to the majority of people reading this. Michael Bloomberg has done it all, from business to politics, and he's racked up a phenomenal amount of money in the process. He's believed to be worth $40bn.
Perhaps because he's been married once before, Bloomberg has a less formal arrangement with Diana Taylor. They've been together since 2000, but both are apparently happy to remain as partners rather than husband and wife. Whatever works for them!