Both uncle Ben, and aunt jemimma (and "columbia, in the beginning of movies, and Betty Crocker) have all been updated..
Uncle ben now looks like a chef, not a cook, and aunt Jemimma is younger, thinner and lighter!
while they do exhibbit some racial sterotyping, for too long a time in US, being a cook was a good job (often the best job) blacks could hope to get-and there are enough 'white faces' hawking food, its not as if its a purely racial sterotype.. we have mama leonne, and Francesca Rinaldi, and mrs. buttersworth, as well at the old standby, betty crocker.then there are 'faceless women', too, Mrs. Pauls, and Sara lee.
no one thinks the worse of 'whites' for selling food..
part of the problems of sambo's was there was a book, (or song? no i am sure it was a book) about 'little black sambo' and yes, he was indian, but, he looked more african, (broad nose, nappy hair.. and he was black sambo.
as for him actually being indian ... ghee was the only hint. (and in the book, that was anglisized to 'golden butter')
(and dr bill you asked if any one put ghee on there pancakes, no.. but i have used clarified butter on crepes!)
