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Not my area/region, but just to throw my thoughts in, there is a Benton Broad Stemmed Point in your region. A couple ID features would be steep beveling on the stem and basal edges.
The patina looks uniform to me, but Gary may be right.
Savannah River
Stem width/shoulder width is wrong for SR.
@ant: To the extent that anyone cares, I would confidently place your last two fairly early in the Early Archaic era -- contemporary with Charleston. Long story why which few would probably care to read, but for reasons.
FWIW
I suppose there are a more than a few here that already have a broad knowledge, but it shouldn’t be under appreciated how long it takes the average un-schooled Joe to start seeing the unique differences in what initially appear like just different colored and shaped “arrowheads”.