Actually, I can think of exactly two: Wacker (on a good day), and Revisor. Aust could probably do it, because he's got the skills and tools, but he doesn't make them, I think. And that's that. I have yet to see any custom razor that comes anywhere close - because they don't have the tools and therefore lack the skills.
And if you ever manage to pick up a Peres Reina or a Mehl Spezial, you will realise what truly qualified craftsmen were able to do back then. Hint: those razors make one of the fabled Filarmonica razors look like an amateur job.
No argument there. That is why I stick to vintage when I can find them. As to "fabled" Fillis call me a peasant. I have one and it shaves as well as other vintage makes I have with similar grind.