The first three select for people who are especially good at school. However, a confounding factor is patients/clients themselves. When working under physicians, I noticed that patients often liked a physician I personally knew to be incompetent at diagnosis, because she was good at being likable. Another physician was fairly robotic in her interactions, but her diagnostic track record was great. As an insider I could compare their assumptions to test results, which let me check their records.

Unquestioned authority can be an issue.

But it can be just as much of an issue to disregard any "authority" on the part of actual professionals. Your doctor isn't a genius, they aren't god, and they don't know as much about your body as you do. But .... they do know HUGELY more about medicine, disease, interventions, symptoms and so forth than you do (and almost certainly more than you will ever know).