The term Asmodian got the players of Pandemonium in a stir as the five powerful races are descended among them. People already started searching for clues about the remaining races and they led to simple conclusions. The Jotunn might actually be the giants of Pandemonium as they are a race of giants in Norse Myth.
The Erebian is a bit tricky, but some have reached a conclusion that it might be a race derived from darkness since the name comes from the God of Darkness, Erebus. The Faekin are easy as that might the fairies of old stories told which made the female players suddenly excited to search traces of them
They thought that Asmodians are actually demons, but the Daemos already fit that bill. Suddenly, one of the mildly popular Explorer named Dungeon Lover noticed that she has clues on what Asmodians are. She has delved into a ruin back then that depicted a powerful race of godlike beings that protected the world from the dark gods.