Gonna wade into this nonsense...
First paragraph - "A new Square Enix Exclusive - 2P color varient - of YoRHa No. 2 type B....." 2P isnt a 'character', its a designation of a color varient of the 2B model. Given context of SC6, where 2B is a DLC character and '2P' is the recolor of that character, this whole issue over 2Ps skin color becomes super moot. Why? Cause Soul Calibur is a fighting game and if two players choose the same character, one of them has to have a different color design to quickly distinguish whos playing who. It's more likely given that this model was put out is for two reasons. 1) People liked the color variant a lot so it was an easy marketing ploy, 2) Nier raid cross over would raise attention on Neir Automata again and this is a good way to tap into that and make profit. What people are confusing is thinking that because merchandise of something is sold, or because a varient of it exists, that it is a 'canon' representation of a character. This would be like saying that the red party hat pikachu is SSB is a canon and separate character from regular pikachu by the simple virtue of it being a color variation in a fighting game which isnt canon to the pokemon universe.
Lets make this even more moot by saying that 2P may have gotten darker skin tones in SC6 simply to make the design more distinct and more easily identified in a fast paced fighting game. Meaning, its a mechanics choice rather than a purposeful character choice. Take this concept even further and realize when they started designing the Nier Raid (which predates the release of SC6, let alone the DLC which incorporates 2B), the lead NPC for it was probably unnamed but designed to look like 2B and its perfectly possible the original design had a lighter complexion and was darkened for the reasoning I provided above.
At this point, the only representation of 2P that is canon gamewise will be the Neir Automata raid. Thats it. So the representation - for whatever reason - is the true canon representation of the new character designated 2P. Speculation why they may or may not have lightened her skin tone is just that - speculation. And honestly, Im not sure why this is a talking point. Unless someone has concrete evidence that someone at SE was like "I dislike brown people, make 2P white cause Im a flaming racist!" then this all is either a moot discussion at best or a very terrible and baseless insinuation that SE's management is filled with racism at worst.