A hybrid Second World War battleship

Which countries' components would make the best Second World War battleship?

US 16-inch guns and high-pressure machinery combine with a British hull and armor scheme to produce something like a Lion-class design.

The answer favors marginal advantages wherever they appear: US weapons and power plant, British armor and hull practice. Nine 16-inch guns in a Lion-like hull become the likely result. No one national design is superior in every component, so even small advantages matter when assembling the hybrid. Gun, machinery, protection, and hull choices still have to form a coherent ship.