They should be in alphabetical order by surname of author. (ethicsandclimate.org)
There's a huge rise in popularity of surnames as first names with Hunter soaring up the charts up 33 places to 67 and Grayson up 37 places to breaking into the Top 100 at 93. (bounty.com)
Rules Members are free to create author threads by surname if they do not currently exist — but be sure to search the group first to see if a thread is already present before starting a new one! (goodreads.com)