Hitler’s theism has been strongly debated. He was a Roman Catholic throughout his life, his library was full of religious works, he explained and justified his actions in religious language, saying that exterminating the Jewish peoples would be doing the almighty’s work. At the same time, many scholars have said that he was simply using religion to manipulate, while christian apologists say that nobody so bloodthirsty and evil could be a christian (hes bad, so he can’t be christian).

Regardless, with much of Nazi Germany being a highly religious population, primarily Lutheran, does it really matter if Hitler was a theist, atheist or just apathetic? Religious people followed his commands while atheists were targeted for placement in labor camps. If he was atheist, it was an occult atheism that rejected any scientific progress if it did not mesh with either killing people more efficiently or his worldview. Hence, study of Haeckel’s and Darwin’s work was outlawed in Germany.

Lincoln, not a bad pick, but again, his level of atheism is questionable. Same with Einstein. Picking one person to represent groups so diverse as theist, agnostic and atheist is never going to work to everybody’s satisfaction, and at best will leave at least one group pissed off.