I mean, right? No questions, no doubt. Chidi must be a Six.
He approaches the world as a Head Type: solutions will be found by thinking and analyzing. He constantly worries, which is a distinctive Six trait when it becomes persistent. He weighs everything from a black vs. white perspective, with no room for gray.
Although he’s morally resolute, he will go to battle for his friends. Chidi’s Sixness, the conflict within him when faced with the Good Place, is what makes him such a great character. Should he help Eleanor, who’s (unwittingly at first) breaking the rules? Once he’s decided on his choice, he won’t quit. The writing, the directing, and the acting have all nailed a beautiful portrayal of a Six.
I just wish his wardrobe displayed more eccentricity. Men Sixes have a strange sense of fashion, no matter how sophisticated their profession. The tweed-and-turtleneck makes for a great joke, but his pants should’ve clashed. Heh.