Users can be grouped by almost any field, in any order

a  b  c  d  e  f g h  i  j  k  l  m n  o p q  r  s  t  u  v  w x  y z _ * 
First Role Display Name Description
Happy, Confused
Tester Fred Flintstone O'Malley Live in Bedrock, husband of Wilma, Father of Pebbles