The rest of the cinnamon keyword, sorted:
Thank you for another of your detailed lists, this time on cinnamon. A friend recently asked me about getting cinnamon that did not have lead contamination. She said something about lead in South American cinnamon, which I had never heard of before. Also as others pointed out here, Ceylon cinnamon is the one with the blood sugar benefits, which is also cassia, the science name.
As to cooking, in addition to the cake, cookie, and pudding uses, I often put just a dash in stews and tomatoe sauces, and sometimes a smaller dash of clove powder. Try that for something else that tastes good.