No, as I could only find SN, SM and a few not on your list, BUT if you do find the limit for a C3 diesel oil pleaselet me know on this thread: C3 Zinc limits
There are no chemical limits in those old API specifications, just engine tests. The first API C category to introduce any chemical limits was API CJ-4, which sets maximum limits for sulphated ash, sulphur and phosphorus.
Furthermore, none of these categories place a limit on zinc, but they do limit phosphorus. As I said in that link you made Skyship, the maximum P limit for ACEA C3 is 900 ppm; the minimum is 700 ppm but C3 is the only ACEA category with a chemical minimum limit.
Thanks for the reply and the link. In the back of my mind I thought that it might have been the end results rather than the means. You confirmed it. So long as it met a certain wear number they did not care how it was achieved. Also, thanks for the link, very informative.