These are various ship designs from WW1 or shortly thereafter, modeled in 1/6000 scale. Many had little or no chance of being built.
La Motte-Picquet class French cruiser.
1917 Russian design for a Black Sea Battleship. The link has several 16-inch gun designs. Version 2 of the four variations by V.P. Kostenko (at the bottom of the page) was modeled since it was among the later designs (1917) and matches the drawings provided.
Austro-Hungarian Project V Battleship. Austro-Hungarian Project VI Battlecruiser. The last Austro-Hungarian battleship and battlecruiser designs were modeled.
German Post-Jutland Battleship Design Studies. Battleship study L20eɑ was modeled since it was selected on 11 September 1918 as the basis for the next German battleship (Dodson, “The Kaiser’s Battlefleet” page 126). Battlecruiser study GK4541 was modeled since it was among the last designs considered (Dodson, “The Kaiser’s Battlefleet” page 127) and since it was included in the Avalanche Press game “Jutland 1919“.
Tillman Battleships. Design IV-2 was modeled since it was the one presented to Congress early in 1917.
ncc1717.com 
Chances are the German GK4541 ships would end up named after more contemporary generals or using names like Scharnhorst and Gneisenau, Hipper, Scheer etc.
I named my 4th Mackensen class ship Furst Bismarck and my 3 Ersatz Yorck class ships Yorck, Gneisenau and Scharnhorst. For the GK4541s I continued to reuse old GK names. The Germans didn’t use Hipper and Scheer for ships until they were dead.