Nasko at Netsekure.org has results on the root test
You may recall that about a month ago I wrote about technology blogger Nasko and his experiment with SSL roots. My blog focused a lot of Nasko's crawl, but the punctuation mark on this entry was that Nasko was uninstalling all the trusted roots in his browser to see which ones he really needed. Now, 30 days later, the results are in.
You can look down the whole thing for yourself, but the CAs of the first four roots he encountered go as follows: