Nope..... Your know by now that there's not enough sign of use.... You've found some good ones lately though. . . Don't over think it, and unless it's just a great spot cover more ground... Just my opinions
Those types of artifacts are pretty hard to ID. It goes a lot to the context where they were found. I think it's one of those things that wouldn't require much shaping or alteration, you would just pick up whatever natural rock was lying around, and there might be plenty, and that would work. I always like your posts, too.