Who's who other than Strietmier, Fuchs, and Schierring?

Got any websites, to make things interesting?

Will Fanzoj do?: http://www.fanzoj.com/

or Karl Hauptmann?: http://www.hauptmann-rifles.com/

I don't think this is what you mean, but this guy does tactical style rifles and comes highly recommended:

http://www.roedaleprecision.com/GB/index.htm

Germany -
Hartmann & Weiss (They don't have a web page, but they are regarded as the best custom m98 specialists in the world. I believe Holland&Holland uses their actions in their highest end repeaters),
Johannsen http://johannsen-jagd.de/
Ziegenhahn & Sohn http://www.ziegenhahn.com/

Austria -
Josef Just http://www.jagdwaffen-just.at/
Peter Hofer http://www.hoferwaffen.com/
Hambrusch http://www.ferlachguns.com/
Adamy Jagdwaffen http://www.adamy-jagdwaffen.de/

And in a way, I guess you could say that Sauer, Mauser, Blaser and etc. custom departments are also "custom makers"

There are specific traditional gunsmithing regions in both countries:
Ferlach in Austria an Suhl in Germany.
There are literally hundreds of exceptional custom builders in these areas, that most foreigners have never even heard about.
So if you type in google "suhler jagdwaffen" or "ferlach jagdwaffen", with enough patience you might find many more.