the name "ILO" clashes with "Integrated Lights-Out" management as used by (or was used by) some server hardware vendors.
replies(3):
BMC - vendor neutral
RedFish - Current DMTF standard replacing IPMI
ALOM - sometimes encountered in the wild as part of iLO :O
HMC - IBM on non-x86 systems (except OpenPower), not compatible with anything else
RSA - used to be IBM
IMC - Cisco