Organising products by design in collections

I am trying to assist an artist interested in selling prints of their artwork. However, I am encountering difficulty in organising products on Shopify or through the print-on-demand app they are using (Prodigi). Specifically, I am unable to figure out how to consolidate products and enable users to select variants from a single product page.

Example:

  1. Upload a single design to Prodigi.
  2. Choose the products for this design (such as framed print, mounted framed print, canvas, rolled canvas…)
  3. Specify the different sizes for these products.

Prodigi then creates individual products with size variants.

Is there a method to group these products by design? Currently, I can only add each product to a collection, resulting in a cluttered display of about 18 individual products. All for the same design!

Ideally, I want each design being showcased on its own in a collection. When a user clicks on a design and enters the product page, they should be able to use a variant picker to select the desired product (framed print, canvas, etc.) and another variant picker to choose the size.

I hope that makes sense. Any help would be greatly appreciated!

Anyone? Any help would be much appreciated!