What holding company under the parent company Abu Dhabi United Group bases it's identity around the cognomen "city"?
City FC City FC or just City is usually used as short-hand to refer to one of Manchester City F.C., New York City FC or Melbourne City FC, which are all association football clubs owned by the City Football Group, an organisation which bases it's identity around the cognomen "City".
Dubai Media City Dubai Media City (DMC), part of Dubai Holding, is a tax-free zone within Dubai, United Arab Emirates.