Hey I have this saved and want to give you a good full amswer tonight. But as just a preview there are a few things we can say.
Is that he was very bold amd quite the gambler both in personal amd professional settings. He once joked that he could fund the naval budget if they would just bankroll him on a trip to Monaco.
He very early recognized the potential for aviation. And at middle-aged made the switch to aviation and became a strong partisan against the gun club officers.
He was a remarkable moderate. Speaking out even while receiving death threats against both invading China and the Axis treaty with Germany. He also was almost the lone voice arguing after the initial success of negotiations to end the war with some concessions. This was in line with the end of their war with Russia of which he was the last combat veteran.
It is hard to say how good of an actual admiral he was as he never actually exercised command over ships in combat. Very much like Nimitz in that he hung back planned and coordinated. It was Nagumo who commanded the carries in combat.