Group CMS items via subcategories

Hello - I’m trying to create a category page powered from CMS items.

The ideal structure is:
CMS Collection Category Page

 CMS Collection Subcategory
      CMS Item One
      CMS Item Two
      CMS Item Three

 CMS Collection Subcategory
      CMS Item One
      CMS Item Two
      CMS Item Three

 CMS Collection Subcategory
      CMS Item One
      CMS Item Two
      CMS Item Three

Will have a dynamic amount of subcategories and cms items. Is this possible to create on a collection page?


Here is my site Read-Only: LINK
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