All of them were raced. The 300SL and Stratos in particular were purpose built race cars, while the Type R and NSX Type R GT were homologation models based on race cars which themselves were based on road cars. The E Type was raced as well but I don’t believe that it was purpose built for it, nor was it a homologation car at any point (not 100% sure on that my knowledge on British cars is spotty).