Gents,
I haven't updated my FW 190 website in a decade, but there is a slightly more modern version of the
Werknummer listing available as a Word document, here:
http://fw190.hobbyvista.com/werkn.doc. Please note that this document is a little out-of-date as well - I have gathered a lot more material since I put it on my website.
Lots of credit must go to the research of Peter Rodeike, plus support and encouragement from David E. Brown and various others who kindly helped out with that project more than a decade ago.
Cheers,
Andrew A.