Similar Minds.- All In One Personality Tests
The assessment classifies each respondent into three personality typologies: MOTIV, Jung, and Enneagram. It also provides percentages for several "personality disorders," such as paranoid, schizoid, schizotypal, antisocial, borderline, histrionic, narcissistic, avoidant, dependent, and obsessive-compulsive.
There's also some insight into professional careers that should be fitting for the respondent.
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SCIENTIFIC OR RESEARCH SUPPORT: According to the test provider, "all the tests at SimilarMinds.com are developed based on scientific measures used to ensure test validity. (...)
I periodically change the test questions (based on my ongoing research) or add new tests, so check back and retake them on occasion. After more than ten years of researching/experimenting with different systems, both conventional and unconventional, I've constructed the MOTIV personality system, which is basically an enhanced revision of the Big Five personality system (the main academic personality model)." (Similar Minds, 2020)