Holiday Season Arrowhead Hunting

I had the pleasure of a visiting son who shares my enthusiasm for arrowhead hunting. Knowing some places where we might succeed, having been shown them by Chris Pittman, I went out hunting with my son. Each time, he found something but my finds were humbler:

His are on the left, mine on the right. I believe his are Stemmed Squibnocket points. The larger one shades off into what they call "Lamoka" and is, I think, quite similar to the broken stemmed point I found, on the right. 

The two concave-base items on the right are barely arrowheads. I am not sure about the bottom one, the top one is pretty clearly a reworked flake. Kinda charming:

A "skewed" arrowhead.

The base is carefully worked:

Just a little flake.