Hello Nelson,
Agentless means that the host server is free of agents and that job is now handled by ilo4 via snmp port 161/162.
If you still want host OS information from the servers than you would want to install the Agentless Management Service on the OS/Server side to give you those details.
The AMS is not an agent but a service that talks through the ILO Driver then through the PCIe Bus.