No, we judge people by actions, not by random categorizations or 'fits type' or 'Polarizing Charisma'. Here's how to Spot Cult Leader proper: They manipulate people and exploit them by taking their money. Otherwise it's not a cult leader.
There is post-facto judgment of those who have done harm, and then there are heuristics we can use to help us avoid people who would do harm before it's been done.
What is the false positive rate of these heuristics?