This topic was raised at lot with VCF Deployment , the customer doesnt have Internet connection and saw that this process is not super automatic when you are building the workload domain.
until today i was referring to https://kb.vmware.com/s/article/66612 but i found this doc lucking because it feet for VCF 3.5 and below.
then i found the root cause of the problem with not Update Index file with the KB that is not update and show bundles only for VCF 3.7 and below and doesn’t have any of the New Products like NSX-T or LCM 2.1
https://depot.vmware.com/PROD2/evo/vmw/index for VCF 3.7
https://depot.vmware.com/PROD2/evo/vmw/index.v2 for VCF 3.8
https://depot.vmware.com/PROD2/evo/vmw/index.v3 for VCF 3.9