This is an awesome comparison!!! I would like to add, that there is always a little risk, that colors "can look a bit different" when they are used for spots, based on the base color of the chip...DG Arc Yellow is absolute fire, even/especially as base color.
DG Peach, not my personal first choice but looking good both as spot and base.
DG Yellow can be ok for thin spots. I just hate that it glows green-ish under UV and not yellow.
DG Saturn... puke green sheen and looks wonky even as a spot color.
On the other hand it actually glows yellow under UV.
Canary imo looks a bit nicer than on that last pic, I guess the sample is a little dirty. Still a muted color.
Yellow... more like ochre.
Butterscotch is absolutely usable again.
These photos are all carefully calibrated for white balance and everything, but if the screen you're viewing them on is junk you will still get a wrong impression.
As I first looked at my DG Peach chip (which I love and I am happy to choose DG Peach over DG Arc Yellow), I wonder because the canary spot almost look a bit greenish in stacks... But in the end I really fell in love with this Combo!