Sorry that I can't help any further / at all - but I'm only ordering a PC for gaming...I'll still be using my iMacs for work (need MacOS & Win10 dual-booting).
ETA: I'll try to help until someone more knowledgeable comes along...
Can't see anything in the PCS AIO offerings that looks brilliant for photo work - all the screens are 23.8" 1080p.
Even looking elsewhere the higher-resolution, bigger screens and those with discrete GPU offerings quickly go up in price to Apple iMac prices.
Best value one I could see was a Lenovo 27" 1440p one with a GTX1650 @ £1200.
I'd offer a warning that any heavily-used AOI is going to have heat management issues and you'll either have a boiling PC or a whirlwind in your study (even the iMacs get warm & fans ramp up when I'm transcoding or doing something with lots of layers/effects).