This might be the only route that I never paid attention to, or the difference are as small as in Bella/Jill case and they never registered, literally a single render different for Bella if you picked Jill and a few Jill if you picked Bella in ep10. But never paid attention if Sage gets different reactions if you were fWb.
I don't remember that many differences even in earlier episodes. I think this is why Josy sticks out so much, since the rest of the alternative routes in S3 are a joke compared to earlier episodes attention to choices/details.