There is a need to create a list or library based on an existing template (customized).
You can use Create List or Library action from Plumsail SharePoint connector, which is a part of Plumsail Actions (third party set of connectors for Microsoft Flow with a fair price).
Getting started links:
why should we have to pay for the simple ability to create a list? We can create items or documents, why not lists? Microsoft should have this action incorporated out of the gate.