@Skywalker_T-65 , I do have a question: Did Renown and Repulse ever get built in this timeline?
IIRC they were mentioned in one of the early posts so they're canon for this timeline - although I agree they're unlikely to have been built. However, the 1914-15 ships, whatever the program/design, are still likely to be cancelled as otl leaving some turrets and armour plate available.
Maybe the Germans laid down one or two more battlecruisers of their own. Say a fourth Derfflinger alongside Hindenburg and perhaps the Mackensen class design was finalised earlier (with the first couple being ordered a couple of months before the war instead of after the war started.)