Jon, not sure how you plan to go through/sort them, but basically, you’re looking for 1959-1981, these are 95% copper. There are some 1982 cents that are also 95% copper, there is a weight difference, which I couldn’t tell you what it is, I use a reydale sorter to sort mine, which probably takes just about all of the intelligence out of the process, but my motives for hunting pennies may differ from one who hand sorts.
1909-1958 are Lincoln wheat cents, and Indian head cents are dated 1864-1909, these will all have slight variations in composition, but are 95% copper as well. The only caveat here is the 1943 wheat cent, which was made of steal due to WWII efforts to conserve war materials (copper, nickel also, but that is irrelevant in this instance).
Hope this helps