the Sectioned theme package will not include the sample data (dummy/demo data). Because Shopify don’t allow include sample data into package. So, to use it, you must upload your data.
the Sectioned theme will stores images in Files area, not in the Assets folder. So, can not export it into the theme package. It only stores in the site that uploaded these data.
Everything theme have 36 Sectioned theme, from Home 30 to Home 65.