Yamato had the best armor and guns of any BB, but could it hit an Iowa class that was weaving and using the much better radar controlled firing solutions?
I think the Nevada specifically wins for sheer demonstration of tenacity (although her sister ship Oklahoma famously did not fare nearly as well). In addition to running herself aground to avoid sinking at Pearl Harbor, she later survived two atomic bomb blasts in post-war tests before being scuttled with a torpedo.
Also, Dreadnought gets some notability for being the only battleship to sink a submarine in combat. In this case, she rammed a German U-Boat.
I wouldn’t be so quick to discount Dreadnought. The ship’s battle record may not match that of the World War II battleships, but her design was so revolutionary that her name was the descriptor for every battleship to come after her. So much so that battleships are generally divided as either pre-dreadnoughts or dreadnoughts.
Although the Iowa class is, without a doubt, the epitome of battleship design (if in doubt read the fine analysis linked by sailboat), I don’t think they ever fired a round at another ship of their class to prove it. That honor goes to the South Dakota and * Washington* during the Guadalcanal campaign and to Adm Oldendorf’s six old battleships (five of them raised from the wreckage at Pearl Harbor) in Surigao Straight.
My personal favorite is the Texas. The oldest dreadnought that survives and my introduction to the battleship.
Pretty sure the OP is talking about “Dreadnought” type battleships, although I’m not very convinced that they know about the distinction, much less understand it.
My opinion- I have a feeling that the *Iowa *class was likely the overall most effective class of battleships, as their combination of speed, armor, firepower and technologically advanced fire control was second to none. Sure, other ships had heavier armor, bigger guns, or were faster, but none were as close to the top in all 3 categories, as well as having the most technologically advanced fire control systems in the world.