The most well-rounded fleets from 1935 to 1946

Which navy had the most well-rounded fleet in 1935, 1939, 1943, and 1946?

The Royal Navy through about 1943, then Britain and the United States in different but roughly comparable forms.

The Royal Navy was the most well-rounded fleet in 1935 and 1939 and probably through 1943. After that point, the United States and Britain built different kinds of balance around different geographic demands. The US Navy concentrated immense strength on the wide spaces and island bases of the Pacific. The Royal Navy still had to sustain useful forces in the Atlantic, Mediterranean, and Pacific, making a single ranking less informative than asking how well each force structure met its own global commitments.