That is great news. I have been looking for a site that would list things like that. My husband is a diabetic and I know that other types of potato are not good.
You want foods with high satiety, low “glycemic index” and/or low “glycemic load”. The metabolic response varies between people, but there are general trends that have been compiled.
See http://www.nutritiondata.com/ for a good bookkeeping site with satiety factors (though satiety varies so strongly between individuals that the values may not be useful).
See http://www.glycemicindex.com/ for glycemic index and glycemic load values. Click GI Database on the left-hand menu.
Another good site is http://www.whfoods.com/, see http://www.whfoods.com/foodstoc.php in particular.
This is all important stuff for bodybuilders and other athletes as well, so often you can find helpful resources for diabetes diets on fitness websites.