Bass,
Here's a link to a publication about the fig orchards that were planted in Casa Grande, AZ back in the 1920's and 1930's with a special strain of Kadota known as the "Clarkadota".
W. Sam Clark sold farmers in Casa Grande his plants which were supposedly similar to the regular Kadota in most regards, but had a higher quality fruit. The orchards didn't last for too long because Clark's Kadotas did not hold up well to the climate extremes of Arizona, along with other reasons outlined in the text.
Not sure if the improved Kadota that you've come across is the same one that Clark was selling back in the day or if it's something else.
Joe