Optimum sprite settings for mobile

Overwhelmed by the number of Inspector Options when you make your imported bitmaps Sprites(2D and UI).

Is there a list somewhere of suggested ‘best’ settings for optimizing both texture quality and performance?

Which settings should be avoided for performance reasons?

Usually the default settings should be perfectly fine. The only better way to improve performance vs. the default settings would be to investigate Sprite Packing.

And check google for a number of really good videos.