I like ring doughnuts and jammy ones too, but I really don't like the ones that use icing sugar on the outside. It has to be proper sugar with a little bit of a crunch that makes you like your lips.
I recently tried warming doughnuts in my air fryer and then adding a little cinnamon sugar, it's going to be my downfall 
Anyway... which supermarket makes the best doughnuts?