oh, I remember his youtube channel, didn't know he had a class

"512 types" may sound intimidating or too much maybe at first glance, but what he is saying is probably not that new necessarily. I saw these similar 'subtypes' under cognitive types as well. So for instance, you could have and ESTJ (mbti) Te and Si strongest or you could also have one with Ne quite strong...etc. That is a very brief gist of what I remember from his channel.