Alex:
As already noted, Revisor has good selection of razors, and owner Herr Kronenberg is a gentleman. Also try Wacker razors at the Shaving Shop. Ralf Aust is an excellent razor, too. You've already mentioned Thiers-Issard, Boker and Dovo. It's slim pickings these days, especially when once upon a time there were hundreds of razor manufacturers in Germany, England, America and scores of other countries.
By the way, welcome to Straight Razor Place.