No, I'm talking about what would have happened if we didn't standardize things like the gas nozzle/pump early on with ICE cars, which made them more universal.

No, I'm talking about what would have happened if we didn't standardize things like the gas nozzle/pump early on with ICE cars, which made them more universal. There is no need for multiple styles of charging plug design (the physical interface). The innovation would be in the internals that negotiated the rate of charge, like USB devices do with fast/regular charging. I can still charge my 10+ year old devices with modern chargers that are capable of outputting 2-3x more current than my old device can handle, because it automatically negotiates a lower rate, using the same type of plug.