Congrats on some nice looking arrowheads. If you post them in the North American Indian Artifacts forum, someone there will be able to identify for you.
No help here but I just gotta say, I really enjoy the arrowheads I see posted! Mostly because I ALWAYS look for them when I'm out and to date. I have found 1 (one)! And, that's over almost a half century of looking!! LOL
I guess it's like some people can't find a Silver Washington quarter.
No matter how hard I look, I just can't figure it!