That was what was already there (and the default). I did manage to find the monitors original color profiles...after setting those to the default in "Color Management" and restarting Affinity, I changed the color preferences to that color profile and now there's a "pretty close" match, with the only difference being a very slight drop in brightness of the affinity photo compared against an exported image. That's fairly easy to compensate for. Maybe it's just time for some new displays...
Thanks for the tips and pointing me in the right direction!