In “Preferences / IPTC/EXP / Snapshot button” there are four options. Two are discontinued products and 32-bit. Apple Aperture and Nikon Capture NX/NX2.
Even though you have simplified these settings, I would like to see Snapshots for other programs like Affinity Photo and DxO PhotoLab.
That's a great suggestion. If everyone could give us feedback on what they use/would like to use, that will help us prioritize.
Same as the OP - DxO PhotoLab and Affinity Photo.