Based on the provided documents, there is a template related to digital items: Fulfill any digital items in an order. This template fulfills any items that have no physical delivery required, such as digital items.
Additionally, there is another template that might be relevant: Create redirect URLs when a product's status changes, which could be used for digital products that are no longer available.
Please note that these templates are from the templates.json document.
If you are looking for more information on digital products, you might want to explore the send-admin-api-mutations.json document, which contains mutations related to products, including digital ones.