In game "Hearts of Iron IV", based on the start of 1936 script, major countries' polities and ethos like what kind of ethics in game "Stellaris"?
Here are my opinions of these countries:

United States:

Fanatic Pacifist(Undisturbed Isolation) + Egalitarian(Democratic)


United Kingdom:
Pacifist(Policy of Appeasement) + Egalitarian(Democratic) + Xenophile(Overseas Colonies)


France:
Pacifist(Policy of Appeasement) + Egalitarian(Democratic) + Xenophile(Overseas Colonies)


Soviet Union:
Fanatic Egalitarian(Communist) + Materialist(Marxism-Leninism)


German Reich:

Fanatic Authoritarian(Dictatorship by Fuhrer) + Xenophobe(Persecute Jews)


Italy:
Fanatic Authoritarian(Dictatorship by Premier) + Xenophobe(Fascist)


Japan:
Fanatic Militarist(die for Mikado) + Xenophobe([data deleted])


China:
[data deleted]