The 1st pointy item does not look right to me, although it is triangular in shape. It is a chipped stone of some sort, but definitely not a point.
When I began artifact hunting, it was shape that drew my attention. I can not tell you how my heart raced when something like that came into view. But alas, I’ve been duped by the shape of objects countless times.
Surface hunters call these fakers.
This one looks good though. I do not see any indication of purposeful alteration on any of the other stones pictured, but I do on this one. I see the flaking that you mentioned. This could be (and likely is) a Thumbnail Scraper, which is a NA Artifact.
The small finger tip size, the steep edge flaking, the unifacial base and the curved working edge are indicative.
It looks to be made of a high quality material too.
Generally speaking, it is helpful to include your thoughts or opinions regarding why or what it is that makes you suspect that an item could be an artifact, as you did with this one.
BTW: Good Eye!