Most chocolates over 85% cocoa are fine with me and my BG. Lindt or the ones at Aldi, or more expensive ones, I just look at the carbs and don't buy any with sweeteners because I don't like the taste.
I'm not worried about fats. I Need to get my calories from something if I reduce the carbs I'm eating.
When I was first diagnosed with diabetes (diagnosed as T2 initially for two years) my lipids were all out of whack.
I changed to a low carb higher fat way of eating, with lots of saturated fats like butter, cream, cheese, fatty meats (and chocolate), and within 6 months my lipids were all back in the green, along with my BG, thanks to insulin.
I have no idea if it was the diet change or my blood glucose mostly normalising that caused my lipids to go back to ideal levels, but it looks like those saturated fats haven't done me harm in the past 7 years.