Also, from your first photo, the white point appears to best match a type known as Neville Variant, a rare type of the Neville Complex of point types. It dates to the Middle Archaic, and is roughly in the 8700-9000 calendar years before present range. Probably made of rhyolite. The Paleo point in the middle of the first photo is made of Marblehead Rhyolite.
I have hunted New England beaches for several decades now. You obviously have found a good spot, and finding a Paleo era point is the best beginner's luck you can ask for, IMHO......
Note: yes, the "dog" rock is natural, not an effigy.