As someone who has used most of these standards, save for some of the more esoteric ones, I can honestly say type M is best - all the benefits of type G, but won't literally stab your foot when you step on it (I'd link some nsfl photos if I weren't on mobile).

Built in fuses are quite archaic - circuit breakers are better, and if you really need one, build it into the appliance.

Any socket that is compatible with type C plugs tends to have plugs that easily break if any kind of bending or shearing force is applied to it while plugged in, and the equipment manufactured for it (adapters and multiplugs) tend to be cheap, not make good contact and allow the plug to fall out easily. I've never encountered a type M socket that didn't Just Work™