I remember when you first posted that one G-town. Those serrations and color are the giveaway. None of mine have serrations. Seems like the basic triangle shaped point is the most common anywhere. Simplest of designs.
That's what makes it hard to seperate the different types. Mabbe not so when digging with a clear line of demarcation, but when surface hunting, everybody is just laying out in the sun on top of the ground. Thousands of years of history with no separation.