Flamingo is pretty close to a cruise missile in many ways. You correctly observe that this is a continuum but most but not all drones have props whereas all missiles are either rocket based or jet engine based and missiles tend to be a lot faster and do not allow for a change of plan after launch.

So no. But the Lyutyi (sp?), the FP-1 and the Nynja all qualify as drones (and there are many, many more, it's a veritable zoo) if you make that distinction, as do all of the sea-borne gear.