I guess I gonna necro this thread a bit (finally) and put on some new drawings. The 1938 Heavy Cruiser design studies as defined in Norman Friedman's book. This will include both the 8" proposal and a 12" proposal, the latter seemingly one of the ancestors to what would be the USS Alaska-class large cruisers. Anyway, here it is:
The Heavy Cruiser Study of April 1938 (8" Version):
The Heavy Cruiser Study of April 1938 (12" Version):
If there's any mistake please do tell! I make it so that it uses technologies as of 1938 and strictly adhering to the characteristics in the book, hence no AA beyond .50 calibre machine guns and a lack of radar.