Your categories

Imagine how you want to organize your bookmarks?

Theme -> Names

Media / Bloomberg
Media / New Your Post

Type -> Theme -> Names

Apps / Office / Libre Office
Apps / Office / Microsoft Office

What about Type -> Theme -> Type -> Names

Apps / Development / IDE / Visual Studio Code
Apps / Development / IDE / PHPStorm

Next example Content type -> Content type -> Theme

Audio / Music / ...
Video / Movies / Action /
Video / Movies / Comedy / 

What else?