The French engravers typically printed many different artist proofs with different sets of colors and progressive printing. Most of them are signed by the artist. No idea about rarety or types of papers (quite different - see also scans).
It is not the aim to be here complete here. Besides the scans of what I own, I know there are other artist proofs shades available. Any available information which can help to complete this part, is welcome.
Below you will find three different types of artist proofs:
1. Progressive proofs black/white:
2. One Color proofs (in no partical order):
3. Multi Color proofs:
