Captions entered in iPhone do not import into MacOS Photos App
I'm using MacOS Photos app to import photos from my iPhone via USB-C cable. There appears to be inconsistent behavior of importing Captions based on the path used to import photos into MacOS Photos app. Using AirDrop from iPhone to MacOS, then importing into Photos App: works. On iPhone Save to Files, then import to Photos App: works. Add to Shared Album: works on iPad, does not work on MacOS. Import using Image Capture, Import directly from plugged in iPhone, a dozen other methods tried: does not work. It's not just Photos app. Opening in Preview is also inconsistent. Depending on how the photo is transferred from iPhone to MacOS, sometimes the Caption shows up in IPTC, sometimes it does not.
I want to plug my iPhone into my MBPro, and use Photos app Import to properly import the photos, including the Captions. If that's possible, how? If that's not possible, why is handling of Captions so wildly inconsistent?
Background:
I use iCloud only for Shared Albums.
Yes I've opened Photos App using Option to create a new Photos library. It still does not work. I've searched forums and tried other methods. Nothing I've tried works.
When I open Image Capture app it does not include Caption regardless of download option. When I Add to Shared Album in iPhone, it does not work on MacOS - but Caption does show up on my iPad - except it's called Comment, not Caption. The UI on iPhone says "Caption".
I do not use iCloud for all my photos for many reasons, including: 1. I live in a rural area, and even though my internet is "unlimited", I have reason to believe that data speed is throttled past a certain point. 2. I have 6 Photos Libraries on my MBPro (for good reason), totaling over 600GB. 3. The "Some users were affected" during iCloud problems in March, 2021, I was one of them. I couldn't sign in, my devices didn't synchronize properly, there appeared to be corruption in some synchronized files. 2 weeks of phone support, install of a clean version of MacOS and many hours of investigation. If I didn't have my own daily, weekly and monthly external drive backups, I would have lost an unknown amount of data.
I stopped using My Photo Stream on MacOS because it shows only the JPG version and messes with video. When I use Photos Import I get hundreds of duplicate photos, interleaving HEIC and JPG. I want the HEIC only on my MBPro. That is where I do my photo editing. That is why I have an MBPro.
MacOS 12.3.1. iOS 15.4.1. The same problem existed on previous updates.