@Eddie2, I like your list. I had a gastro-intestinal doc ask me recently, once he knew I had T1D, "Do you experience any blood glucose lows or highs?" I said, "Of course, I have diabetes and use insulin! I have highs and lows every day!" I felt I was a bit rough on him, but I'm not his first diabetic patient and that question seemed ignorant to me. I know, I should just chill, but sometimes I speak my mind.
I've been helped by doctors of many ethnic backgrounds as I lived for 30 years in the San Francisco Bay Area, a demographic slice of the entire planet. My only requirement relating to ethnicity is that I must be able to easily verbally communicate. If the accent is hard to follow, I won't continue. But I've detected no level of correlation between ethnicity and effectiveness. While I am male, given a choice, I tend to pick female doctors. Are woman better listeners? I don't know, but perhaps I'm showing some prejudice in this.
My latest contact with a new and very experienced endo, I admired that he skipped the stock low warning that seems to creep out in almost every endo encounter. He was looking at my CGM reports and he could see that my exposure to lows was less than 3% of my average day. He chose, instead, to offer compliments and I liked that as I work very hard at monitoring/controlling my blood glucose levels.