Was Reinhard Heydrich possibly more evil/cruel than Hitler?

Yes.

Reinhard Heydrich

What makes Heydrich so terrifying was that, in contrast to Bormann, Himmler and Goebbels, he wasn’t a fanatical Nazi.

Yes, you read that correctly.

A rather shocking fact about the organizer of the most infamous genocide was that he didn’t loathe the targets. Although Heydrich disliked the Jews and had right-wing anti-semitic sympathies, his Anti-Judaism was far more subtle than that of Hitler. It played little role in his private life, and his Anti-Judaism was comparable to that of the average German at the time, it was very moderate. Heydrich did not have the hostile feelings that Hitler had against the Slavs and Gypsies, he didnt care about the “German Master Race”, and his feelings towards the Holocaust targets, really, was simple indifference.

He only played a major role in the Holocaust because he was a very psychopathic, ruthless and ambitious careerist who took all the chances that were thrown at him, and was able to carry out any kind of order without hesitation or second thoughts and expected the same from all of his subordinates. And, unfortunately, he had chosen the perfect people for these tasks: Heinrich Müller and Adolf Eichmann. This characteristic simply came from his strict Catholic childhood by his mother, who, along with his father, helped instill fervent nationalism, absolute obedience, ambition, music and “sacrifice for your community” ideals into their children. He organized the Holocaust simply to advance his own career and status in the society. It is these characteristics that earned him the nickname ‘Hitler’s Hangman’ because he was literally Hitler’s dog: an very intelligent, ambitious but submissive man who did anything he was told, no matter how immoral it was, because the leader always knows what’s best for the German community (in his mind). His wife, Lina, encouraged him to join the Nazi Party in 1931, beforehand, he couldn’t care less about the Nazis.