I recently switched from an iPhone to a Galaxy Z Flip 7, it's great so far but I've had one issue. I transferred all my iCloud photos to Samsung gallery using the Smart Switch app and then I synced them with OneDrive. After they all synced I checked the photos in the Gallery app and it was all fine - the dates are fine, motion photos, etc. Then I checked the photos in the OneDrive app, the dates are all mixed but not all of them. One thing I noticed is that it's only for JPG, MP3 and PNG files (or at least that's what I saw).
Since it works fine in Samsung Gallery, I can safely assume that exif information are still correct. The way OneDrive sort the pictures on their main section under Photos / Gallery is a mess. They used to have a button to change the sorting order but it's not available anymore. I will raise a case with Microsoft support on this.
For now, if I was you, I would ignore how the pictures are being displayed in OneDrive until Microsoft gives more options.
