narrow/wide small/large discrepancies
narrow-small PNG is
1280x960but "narrow" is supposed to be
1280x1024), and "small" is supposed to be
Didn't look into the rest, but obviously, images designed for
Did I miss something?
I didn't produce the images, so can't comment on the size/format.
What I have done is in the post-install provided a script to detect the native resolution & aspect ratio and use a simple calculation to decide what format to use.
Didn't FlibberTGibbet do the final wallpapers? I don't know what name he uses on git or I would ping him here.