from where all the MOBAs emerged

far from accurate but yeah HON's the best
the original one though was Aeons of Strife, a warcraft 3 custom map. after AoS came Defense of the Ancients. later on a beefed up version of DotA, known as DotA Allstars, set all the standards. Finally, HoN wanted to be "DotA 2" so much that a lawsuit made them stop copying content from DotA 1. HoN was and still is the best moba though!