DSM* vs Typology (Keirsey, MBTI, Socionics, & esp Enneagram)

Our lead, Jonathan, is, in his own words "a layman who has some books and stuff on the internet".
Diagnostic and Statistical Manual of Mental Disorders. The latest edition is DSM-5 published in 2013.
* = We strongly discourage typology enthusiasts from diagnosing themselves or others with DSM disorders. The DSM is flawed.