Datasheet / footprint for this weird USB-C connector?
Your weird USB-C connector will not be conveniently interconnecting twelve pairs of contacts inside the connector body. That connector is most likely one that was designed for some specialty application such as a source connector on a charging device. The store where you bought it probably got a bucketful of the parts and are selling them to folks for a very low discount price. 

A "to spec" USB-C connector for general application for any type of end (host, device or charger) will have 24 contacts. You should purchase from a legitimate supplier that offers to show data sheets for the parts that they sell so that you can make a proper determination of suitability to your application. Then when you make a selection you will have full design data available in order to properly design your device. Steer clear of any offering that does not provide direct access to layout information at least as detailed as this:



I checked at several popular online electronics components vendors and noted that there are a plethora of properly sourced USB-C type PCB mount connectors that come with data sheets. Typical offerings are available for reasonable prices even in quantity one at a couple of USD.