A type of investment swindle is named for which con man who ran it in the 1920s?

In health insurance, what does HMO stand for? Which orange-fleshed melon is named after a former papal estate near Rome? Which word names both a type of music and just plain people? Which word names both a type of mustache and a bicycle's steering bar? Which word names both a breed of toy dog and a fictional falcon? Which shirt, a symbol of conformity, appeared in the title of Bob Newhart's 1960 comedy album? Which name belongs to both a spy plane and a rock band with a guitarist named The Edge? Which word goes before "star", "sequoia" and "slalom"?