It looks like there are more than a few tools there versus points. The ones with scalloped edges were probably used as cutting tools, most likely un-hafted by the looks of them. I'd guess they were used for cutting through meat and stuff. If you are trying to make jerky or some sort of dried meat, you need something that you can use to slice it thinly, and preferably across the grain. As sharp as knapped tools can be, the edge just isn't smooth enough to slice stuff like that like a modern knife can. The really long skinny ones were probably used as awls for punching holes in leather and stuff so that they could stitch things together. It looks like there are also more than a few tools that were likely used to scrape the flesh off of hides during the process of brain tanning them. All in all, it's a pretty cool spectrum of points and tools that would have been needed to do basic things before the introduction of iron and steel tools by Europeans.