Hey,
I have re-regioned this US save (many thanks to Brentage for the original save) to EU, works perfectly, although I have played the DLC before and had some trophies, still auto-pop the rest to 100%. you need to delete your PS5 save beforehand (just back it up to the cloud) and then copy this save start the PS5 version and start the DLC and all the trophies will pop up.
here is the EU save link :
EU God Of War Ragnarok Valhalla DLC Complete AutoPop on PS5 [CUSA34386]
https://mega.nz/file/aVY2jBYS#4xe8ezl2-pVLJEOOxHTnEC2Z3puSdEE34U5-BNquLuY