How do I fix iCloud photos not showing on my PC?

I am in the process of copying all of my photos from my computer (Windows 11) to iCloud. I can see that they have all synced, but not all are appearing in the library. For example, I have 573 photos from a 2006 trip. All synced, and all are in the library. In another case, I have 674 photos from a 2019 trip. All synced, but only 477 are in the library. Since I have 59G free, space is not the issue.

Any suggestions?

[Re-Titled by Moderator]