This.

On Mac:

1. Import using "Image Capture" - pro tip: DO NOT plug your iphone into usb on a dock. For some reason it always hangs or drops the upload. I plug direct into back of M1Mac. Import each device source to a separate folder
2. I use Hazel to do renaming based on time/date/device
3. Dump all together into same folder
4. I use Gemini II to delete duplicates.
5. Now you have all photos in one folder, named with useful date stamps, and device that was used to take them imprinted in the file names. If metadata was retained during your uploads you can resort the whole archive by date. Do your own file management.

Probably easier ways but this always works for me. Only big suck is the import.

EDIT: if you uncloud your photos and keep them hardcopy just always make sure to follow good backup policy!