five buddha families

bcom ldan rgyal ba rigs lnga - the Bhagavan Victorious Ones of the five families (the rulers of the five families of the mandala) are: Vairochana, Akshobhya, Ratnasambhava, Amitabha, Amoghasiddhi. (IW)

Please see a most descriptive source: [1] (RWB)