I would call the one in the center a marshall because of the longer base. The one the left the work looks like a Allen but it has a ground base so I would call it a Angostura. What do you guys think?
I dont care too much for Angostura. Grinding certainly puts it in the old category, but unfortunately just going from your pics, the flaking does not seem very distinctive.
If it was mine, I would put it in the " take to the flint show Bag" for professional opinions.