Speaking of the whole "Shinkiro didn't make the SNK artworks in CvS1", some inconsistencies become clearer when you look at the imitations knowing this.
Some proportions are off, the coloring and lines sometimes look blurry and/or thick.
There's a lot of media that can easily prove that SNK didn't want to adknowledge him before his redesign.
The character encyclopedia showing a silhouette (with commentary saying they can't go on detail about him), him getting skipped from KOF XIV's art gallery, Nameless, etc.