To clarify iCloud is Not Intended nor is it designed to be like an External Drive to Archive or Off load unused documents, music, photo, podcasts or videos.
It is a conduit to upload from the computer to iCloud so Other Apple Devices signed into the same Apple ID can access the some files.
Any changes made on device one can be accessed by Device Two and Device Two will see what changes were done from Device One.
Any changes made by Device Two and later seen on Device One will also see the changes made by Device Two.
Important factor - Copies of what is stored on iCloud and the correspond copy on the Internal Drive of each Device.
That is so, when an Internal Connection is not available, the work can continue to work on the file. Once an Internet Connection is Re-Established - those changes will be uploaded to iCloud.
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The final word from Apple on Managing the " Other " Category
Other: Contains files that don’t fall into the categories listed here. This category primarily includes files and data used by the system, such as log files, caches, VM files, and other runtime system resources. Also included are temporary files, fonts, app support files, and plug-ins. You can't manage the contents of this category. The contents are managed by macOS, and the category varies in size depending on the current state of your Mac.