I'd like to give a quick shout-out to Mister Donut in Asia. Although based in Boston, Mister Donut has a huge presence in many parts of Asia. This shop was located in a fancy shopping center. Their donuts and coffee are both outstanding.
In this small shop, patrons help themselves with the aid of tongs and trays. In larger shops, patrons who dine in can eat on nice china in a room that is noticeably more upscale than the U. S. donut experience. I haven't noticed those necklace-like donuts before; they must be molded somehow.