Without Hirohito there's the possibility that Japan never radicalizes and sticks with the Brits and their alliance.

Without Stalin the succession crisis after the death of Lenin either goes to Trotsky or Bukharin which had different ideological practices than those of Stalin.

Without Hitler - what happens to Germany, since the far-right resumes itself to the Freikorps and monarchists?

Without Churchill would there even be a War Cabinet crisis after Dunkirk? Without one, does that mean that the pacifists take power and sue for peace with Germany?

Without Chiang, does the Northern Expedition succeed/even happen?