According to this link
Oatmeal is a 70 whereas there are many items which are equal or lower such as
sponge cake 66
banana cake with sugar 67
white spaghetti 59
instant noodles 67
jams and marmalades 70
mars bar 63
Aside from the fact that most of these have no nutritional value, are they REALLY equally good or better sources of carbs in terms of preventing fat storage?
Glycemic Index is a measure of the amount of Insulin 1 hour after ingestion.
Perhaps it is possible that some of these foods have resulted in an insulin peak that has come and subsided in less than an hour?