The official name would still have been Hurricane Sandy, though by that point it would have become a post-tropical cyclone rather than an actual hurricane.
The popular media term of "Superstorm Sandy" would probably be in even wider use than it is now.
That said, there was never any risk of Sandy getting anywhere near category 5 strength, and such an even as described couple probably be dismissed as impossible.
Hurricane Chris of 2012 was a category 1 hurricane.
Hurricane Andrew was a Category 5 hurricane with 175 mph winds. The pressure was 922 mbar.
Category two
The first category of a hurricane is category 1.
Hurricane Sandy briefly peaked as a category 3 hurricane.
Hurricane Isabel was a category 5 hurricane.
Hurricane Michael was a Category 5 hurricane. It made landfall in the Florida Panhandle on October 10, 2018, with maximum sustained winds of 160 mph. It was the first Category 5 hurricane to make landfall in the United States since Hurricane Andrew in 1992.
Hurricane Tanya was a category 1.
Hurricane Arthur (2014) was a category 2 hurricane.
Hurricane Chris of 2012 was a category 1 hurricane.
Hurricane Ike is a category 4 hurricane.
Hurricane Andrew was a Category 5 hurricane with 175 mph winds. The pressure was 922 mbar.
Category two
It was a category 1 hurricane.
The first category of a hurricane is category 1.
Category 5. 'Rita was the seventeenth named storm, tenth hurricane, fifth major hurricane, and third Category 5 hurricane of the historic 2005 Atlantic hurricane season.' (from wikipedia)
Hurricane Fabian was actually in 2003. It was a category 4 hurricane.