Myers Briggs Type  . This is one of the better-know assessment tools, which looks at four different preference pairs to determine a four-letter type with common qualities. The preference pairs are Extraversion (E) or Introversion (I), a preference for Sensing (S) or Intuition (N) when absorbing information, coming to conclusions by either Thinking (T) or Feeling (F), and approaching the outside world by either Judging (J) or Perceiving (P). If a character is an ESFP type, for example, they're likely to be energetic, sociable, friendly, caring, expressive, enthusiastic, spontaneous, etc.

Enneagram  . While it's not exactly new, the Enneagram has gained a lot of popularity lately for the way it portrays nine different personality types (The Helper, The Investigator, The Challenger, The Peacemaker, etc.) and goes into a lot of detail about the types of thought processes and external factors influence each type. I've been using this tool a lot lately because there is a ton of information under each type (basic fears, desires, qualities displayed at different levels of maturity, etc.), so you can create more than just caricatures or stereotypes.

Five Love Languages  . The five love languages (Acts of Service, Gifts, Quality Time, Words of Affirmation, and Physical Touch) are often used in the context of relationships and how we prefer to give and receive affection, but they can also be a great way to figure out hwo your characters interact with the other characters in your world (especially ones they care about).

Clifton Strengths  . Formerly called Strengths Finder, this is an assessment that will tell you what your top strengths are (things like empathy, self-assurance, ideation, discipline, focus, etc.) so that you can focus on activities and approaches that maximize the things you're naturally good at. I've found this one helpful in coming up with three or four primary qualities that you want a character to exhibit.

DiSC Profile  . Popular in a lot of corporate settings, a DiSC Profile makes a distinction between the qualities of Dominance, Influence, Steadiness, and Conscientiousness and how the qualities of each type interact with others (both of the same type and other types).