And by "these days" I mean is there a RQG-canonical answer for play as the Hero Wars begin?
Googling 'round, I find various ideas.
Essentially Human, but with a deep racial affinity for Darkness
Mostly Trolls
Humans&Trolls, possibly hybrid, possibly able to be either/or as they want
Followers of Kitor -- virtually all races, who followed the teachings of Ezkankekko & Varzor Kitor ("humans, dragonewts, wind children, and anyone else who would learn")
All the above.
https://www.glorantha.com/docs/the-silver-age-and-the-dawn/
http://www.sartar.de/glorantha/kitori-history.html