It's so crazy how much I loved Onimusha, but among all the survival horror games that get talked about from that time period, it always seems to be forgotten. Even I forget it, and I still have the stupid katana controller! lol
Unfortunately, I think you can probably take Onimusha off the list. The remaster of the first game didn't sell well and they cancelled remasters of 2 and 3 because of it.
Unless Ghost of Tsushima and Yakuza Ishin have given them more confidence in the theme to do a RE2/3/4-style remake, I think the franchise is likely to stay in the same awful niche as Dino Crisis where the audience is definitely there but ignored.