I know this is me replying to myself here but i have checked the HUU user guide and if i think the Cisco Link doesn't clarify the ESXi compatibility with CIMC/Server Firmware version but instead the Servers' HW components software drivers' version compatibility with CIMC version according to which ESXi version, do not know why is the drivers' versions related to ESXi and not just CIMC version also i know that ESXi upgrade/update updates the drivers (Can be verified using this command esxcli software vib list) but i think we still need to make sure each driver version is higher or equal to the one present in Cisco Link
If anyone can share more insight on this matter please let me know to verify whether my above assumption/understanding is correct or not.