I first heard Chris Golis talking about personality models in the context of his assessing managers of businesses in which his venture capital funds invested. He would only invest in a business if he was satisfied with its management.
He has now retired from venture capital but has continued his interest in personality models.
He has written the Humm Handbook about the Humm Wandsworth personality model.
The model identifies seven primary emotions which together drive personalities: movers, double-checkers, artists, politicians, engineers, hustlers and normals.