VCenter does not list all VMs in managed hosts?

[JacobPersi]

When connecting to VCenter and iterating through all VMs via the below code, only some VMs are listed. Whereas if I instead connect to an ESXI host managed by VCenter, I see a subset of these VMs, with some VMs not being list in the initial enumeration.

This goes against what I would expect, but I'm not well versed in VmWare VCenter/ESXI. Ideally I would manage all VMs from a single server instead of having to connect to each host individually. Is there some configuration for this?

Any input appreciated.

service_instance = SmartConnect(...)
content = service_instance.RetrieveContent()
datacenter_list = content.rootFolder.childEntity

for datacenter_obj in datacenter_list:
   vm_list = datacenter_obj.vmFolder.childEntity
   for vm_obj in vm_list:
       print(vm_obj.name)