If you want to edit the list of suggested TAGS in the Windows file system, you are going to be disappointed. The list of tags is made up of names you have typed in manually plus a hard coded list from Microsoft.
Below is a response I received from “Jason” at Microsoft Partner Support that explains the situation in more detail
Based on my experience, there is not an easy way to help you reduce tag list in Windows file system. Microsoft supplies several standard filters with Windows Search. Clients call these filter handlers (which are implementations of the IFilter interface) to extract text and properties from a document.
In Windows 7 and later, filters written in managed code are explicitly blocked. Filters must be written in native code due to potential CLR versioning issues with the process that multiple add-ins run in.
For your interesting, you can refer to this developer blog:
For your real concern, I suggest that you do not edit or change this feature since it might bring some potential risks. Sorry for the inconvenience. Thanks for your kindly understanding