The Myers-Briggs Type Inventory is often used by trainers in a variety of situations and contexts. While there is some disagreement on it's validity and reliability, and some critiques of the underlying Jungian underpinnings, it is popular.
This video explains the 16 possible type results one can get from taking this assessment. It also explains the relationship of the 16 types to the four dichotomies. Not flashy but it gets the job done.