Which rear suspension type is NOT typically considered?

The strut suspension system is primarily associated with the front suspension of vehicles, where it combines a shock absorber and a spring into a single assembly. While some vehicles may use struts for the rear suspension, it is less common and not typically classified as a primary rear suspension type compared to the others listed. Leaf springs, multi-link systems, and solid axles are well-established types found in rear suspensions. Leaf springs are common in trucks and some SUVs for their load-carrying capacity, multi-link systems offer improved handling and comfort in many modern vehicles, and solid axles are often used for their durability in off-road applications. Thus, strut systems are generally not considered a typical option for rear suspension setups.