Sorry, I didn't get it, I thought you were taking your time getting them together... Good thing I went ahead and collected as best as I could.
Also, as far as I know, those arts from the minisite are most likely the first batch of PKMN arts by sugimori, which I call "Pre-Classic", with the other batch most likely having come with the japanese Blue, which I call "Classic". I'm not sure as well, just stating my thought.
I've been asking all of this as well on Bulbapedia Forum and the answer was the same. I've also research as far as I could, to no avail...
Why couldn't Sugimori just release her art for all of us to see it?
Well, I guess I'll have to put more hopes on Bulbapedia Forum for this one, thanks anyway.
Believe it or not, those pieces of art are not the first set, IIRC. The first set was, I believe, from the Carddass card set by Bandai. If anything, I'd call the art from the minisite the classic art, and the art probably from Blue JP as revised classic art.
I doubt anyone at BMGf will help, as a great number of their Sugimori art was brought to them by myself (before stuff came out that made me close any ties with them). Ken Sugimori is male, by the way.