I have wondered the answer to this question too. I found two sites that gave both an ingredient breakdown and a nutritional breakdown.
gives both the nutritional and ingredients with specific brands
just gives a generic ingredient breakdown
I have absolutely no authority on this subject other then the sites I gave. I was just interested in this question and started to look up some answers. I will check back to see what others have posted. In the meantime, until I hear otherwise, it looks like on the first site for both ingredient and nutritional value, the next type I am personally going to try is Trader Joe’s Raw Unsalted Almond Butter!