Hello HAKALAMA,
Thanks for reaching out to the Apple Support Communities. We understand you are looking for some information on what the "Other" category in your storage breakdown is. We are happy to help provide some guidance.
The "Other" category primarily includes files and data that is used by the system, such as log files and caches that are managed by the operating system. You can read more about different storage categories and how to save space in the helpful articles below:
How to free up storage space on your Mac
See used and available storage space on your Mac
We hope this information helps.
Best Regards.