Is it possible to use link lists to sort Shopify products using a collection tree?

Yes! Making a custom collection tree is possible. However, note that you can't transfer your sub-collection to a different parent collection. To do that, you must make your sub-collection from scratch under a different parent collection. Follow this process to include a navigation link list:

1. Create all collections.
2. Develop the hierarchy with a navigation link list.
3. Set up the subsection under the relevant parent section.