Finally downloaded photos from two different Google accounts and consolidated it with my Apple photo library. Problem is, I've got photos going back to 2003, some of the photos lack appropriate EXIF data, and there are a ton of duplicates now. And…ended up paying Apple for 2TB of storage in the process.
It was either that or pay Google, which I had no desire to do, given how much "value" they've extracted from me over the last twenty years…