I'm not a Sab nerd so I can't really compare with a vintage sab in hand but...
Masamoto KS is usually what gets mentioned first here...but keep in mind that when people are referring to 'the' KS they are referring to the 240 model, which runs long and has about 255 mm edge length.
Something very close to that (at least on the edge profile side of things) is an Ashi Ginga 270 wagyuto (because they run rather short). In general I think their 240s and 270s might thick the box?
Two other classical options that have stuck rather close to French influences are Mac and Misono, but at least with the Misono there's again a pretty big difference between the 210 and the 240 where IMO the 240 profiles are just better.
Another option that comes to mind are JCK's Carbonext knives. Again, the 210 is a bit of a redheaded stepchild when it comes to profile but the 240 and 270 are really sweet. Only real drawback is that the grind is unremarkable at best... but I'm not sure that's much better with Mac or Misono these days.
You miight see a theme here... if you want to go down this road I think you'd really have to put your short knife preference on ice for a while... the shorter models just don't work as well because there isn't enough room to work with and you end up with either a hockey stick profile or a tall petty.