IMO they are pretty much the same. Like lesser and butter and black pastel and cinni

each snake of the morph is different
find a picture of a dark sugar and compare it to the calico you posted and they will look virtually the same
find a light calico and compare to the light sugar you posted and they will look similar too

as far as the white flecking on the sides it all varies from snake to snake, they both will have some with high and low white. One morph may have more high or low white but i dont think that matters much
to me its kinda like saying a high white spider is a different morph than a low white