Did the fact that some mod gave you a warning and referred to this as
a worthless idea when you first tried posting this in the wrong place not give you a hint? You see the discussion happening right now about how non-cumming ghostlight dildos aren't happening because of the extra work that would require? Imagine how much work it would take for the large amount of NPCs the game has to recognize the Champion as a member of Race X.
There are places where the game
will do this, when it's relevant (Cait will recognize your race at the start, if you started out an Orc it can come up during Right of Conquest, Wyld Elves can react differently to some of Ryn's dialogue etc) but the kind of thing you're asking for would be ridiculous amounts of work for basically zero gain, seeing that some of those don't even make sense from a 'would this character really care about the Champion being X' perspective. And non-bipedal bodies are flat-out never happening for the Champ or companions.