You asked me to name one I named several.
You named two. Macmillan although related to the publishing house spent most of his time either as an army officer, a diplomat or a cabinet minister. Chamberlain was a politician nothing more nothing less, and a very poor one at that whose vanity and obstinacy left our country totally unprepared for what was to come, until September 1938. I'll give you Baldwin, but he was almost 80 years ago. Don't you ever have to good grace to admit when you're wrong?