uninstalling should not work at all on at least some of those apps, as they will exist on the read-only system partition (that only gets touched when the phone updates).
The APK for the apps you 'uninstalled' via the 'pm uninstall' command still exist in the system/product/system_ext/etc partitions, that's why they still take up space.
I wrote some notes at https://andyjohnson.uk/blog/2021/07/17/cleaning-up-a-samsung...