Yamato was a bit of an exception to say the least and your average Washington treaty battleship will do. Destroying 3-6 Yamatos per hour with not a single merchant ship or u-boat in sight will seem rather odd.
Battleships were a pretty uncommon sight, so I'd say they were further down the list than merchant ships, u-boats on the surface, minesweepers, minelayers, or even cruisers without a CV, but it's on the list somewhere.