All of those side notched ones seem to be REED ( 1500-500 BP )..The 2 stemmed might be HAYES
That is a very nice display of N TX finds.
giving ID's especially from pictures can be very difficult ( and controversial ) but researching them
is a lesson in American history.
Dr H's STONE ARTIFACTS OF TEXAS does not list a Reed at all but rather calling a similar type WAS HITA* and the range is definitely N TX.