The first two are 1st Bureau issues, which depends on the 3 types of triangles, again check StampSmarter, also can be different watermarks on these stamps. 1st Bureaus are fun and pretty easy to identify.
None are particularly interesting/valuable. Maybe some machine cancel specialists would find your stuff to be special, but probably not extremely valuable. However, the images are great for learning stamp identification. If you want, I'll start by giving you links to help educate you about how to identify common varieties.
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