These templates are based on the ASP.Net 4.52 MVC Template using the Individual User Account Authentication option.
The Template in Master makes use of the default NPoco Identity User which contains all the properties from the Entity Framework based one.
The Template in the Branch gives and example of how to implement a custom Identity User by implementing the INPocoIdentity interface and adding properties to it.
For additional information see the documentation for the NPoco Identity Provider here: NPoco Identity Provider