Building a balanced blue-water fleet from existing classes

Which current ship classes from different countries would make a balanced medium-sized blue-water fleet?

A balanced mix could combine a Queen Elizabeth carrier, European amphibious ships and escorts, strong auxiliaries, and both nuclear and conventional submarines while avoiding an oversized nuclear carrier burden.

The proposed force begins with a Queen Elizabeth-class carrier, Trieste and Albion-class amphibious ships, and air-defense destroyers such as the Type 45 fitted for a broader missile battery. Frigates can be selected from British or Italian designs, while auxiliaries are essential for blue-water endurance. Astute, Virginia, and Japanese conventionally powered submarines offer different underwater strengths. A United States nuclear carrier is excluded because its crew and support burden would distort a medium navy built around balanced, sustainable capabilities.