The Swiss and UK plugs and receptacles are awesome because they have plastic buffers in the plug's prongs and/or receptacle that make it hard to ever be able to touch live metal prongs in a plug that's between 0 and 100% plugged in. Schuko looks pretty safe too and that standard is from almost 100 years ago! I consider myself careful, but have had a metallic cover and a pen fall onto North American plugs that were partially exposed (thus shorting hot with neutral). Both times the outlet had tamper resistant shutters which did nothing to prevent ensuing fireworks.
Yes the UK plug design is the best I've seen. Mandatory 3rd pin to open the shutters, insulated prongs until they are well disconnected, and very solid fit. More often than not I see plugs half falling out of US sockets, with live and exposed terminals. Thankfully it is only 110v, but still a fire hazard
The mains issue I have with them is just how big they are.
Given how many things I have plugged in on or around my desk, I’d need power strips the size of a large dog to plug them all in UK style. Whereas US they all fit in the size of a very small cat.
