Didn't realize it, but yes, seems that Nio came stock with professional instead of premium cable in the box.
Both use
identical silver plated copper wires, with everything else being different. Pro has 2pin connector mold that works with either recessed or non-recessed sockets, shrink wrapped y-split, clear tube chin-slider, and right angled 3.5mm only plug; the only option with Pro is either 48" or longer 64" wire length. Premium has more "premium" hardware with a nicer looking 2pin connector mold (with either recessed or non-recessed option), 64 audio branded y-split and plastic chin slider, and different plugs to choose from, 2.5mm or 3.5mm, while 4.4mm used to be available but temporary not an option.
The discrepancy is that under Premium cable it says that it is only available with 64 audio universal U12t, U18t, Trio, and Fourte. Nio is not listed in there. But under the Nio product listing, indeed it says 48" Premium cable, unless it was just a copy'n'paste error.
Premium on the left, Professional on the right: