While the others are all unibody architectures, STLA Frame, as the name implies is for larger body on frame models starting with the Ram 1500 pickup and followed by

The automotive giant detailed the STLA Frame platform that will underpin upcoming full-size trucks like the electric Ram 1500 REV and plug-in Ramcharger.

STLA Frame will give trucks like the Ram 1500 Ramcharger up to 690 miles of range with the help of a gas-powered range extender, or 500 miles purely on battery for the Ram 1500 REV. The platform can also handle 14,000 pounds of towing capacity and can hold a 2,700-pound payload.