Looking over the wikipedia list, it seems like some of the kakete techniques might be near or even pure analogs of judo throws. Kekaeshi for instance, would be a good candidate. But others involve grabbing the legs/ankles/feet and would be forbidden. The Nagete also seem like good candidates.
What would be the best way to compare these carefully to determine which are identical, which are similar but still significantly different, and which have no analog in the other art? I am moderately familiar with Judo, but unfamiliar with Sumo (don't exactly get NHK on basic cable here, nor do you see honbasho summaries in the sports section of the local paper).