I would consider anything under 50 to be low, with 50-70 moderate.
However, that mendosa list is new, and alot of values have changed. Most remarkably is the value for American Oatmeal (porridge). Its at 75 which is rather high. The old list had the value listed at around 50. hmmm, I guess the old list was based on Australian oatmeal.
The Basmati rice on the new list is 58, which isn't bad at all.