My guess is that Himejima will likely die either at the end of this fight of when they face Muzan, his mark appeared and the demon did say he'll likely die tonight, so he's really in the red zone here. Tokitou will either die from bleeding or a surprise attack from the demon, but there's a slight chance he'll survive but might end up like Tengen, unable to wield a sword or perhaps retire if he survived the night. Sanemi might survive long enough to face Muzan or die at the end of the fight. Genya will likely use his demon powers and regenerate but he'll most likely won't die like this.
As for the rest, Giyuu is half and half between dying during the last fight, likely to save the others, or surviving and retiring. Zenitsu, Inosuke and Kanao will most likely survive and participate in the last fight. Either Iguro or Mitsuri will die at their fight with the demon or with Muzan, but if they both survived that'll be neat.
Tanjirou is the one worrying me, there are the speculations that he might die at the end of the final fight but I really hope he doesn't, should he survive, he might be the only other person who lived long passed the age of death for those who bears a mark, he also might be the first demon hunter with a black blade to become a pillar, though I'm not sure if there will be a need for demon hunters or pillars if Muzan is defeated, but my guess is that even if Muzan dies, demons will SOMEHOW continue to exists, though I'm not so sure how the author will be able to pull that one out but we'll see.