I am using VMware Software Manager – Download Service 1.5.0 (Build 4322026).
I am only able to see VMware vSphere products under "Datacenter & Cloud Infrastructure", whereas I expect all the product like vCloud NFV, vCloud Suite, NSX, IoT Product, Cloud Platform, SDDC Platform, and "Networking and Security" products must be there.
Could any please suggest me how to enable all the products in Software Manager?
There is no way to do so. VSM is limited to just vSphere at the moment. It can download 6.7 - 6.0. The issues is the metadata files downloaded from VMware. Plus some of the things you mentioned are specific to customers. If you are a customer and owner of those products, you need to use My VMware directly. As an FYI, VSM just shrunk and updating it is non-trivial.
Edward L. Haletky