NPCs composing that spawngroup :

a_greater_skeleton (33%)

a_necro_theurgist (33%)

a_necro_theurgist (34%)

NPCs spawning around that spawngroup :
(Max range : 100)

befallen_59, range=77 (-372,-105,-78)

befallen_58, range=82 (-357,-124,-82)

befallen_46, range=71 (-480,-94,-67)

befallen_70, range=72 (-363,-161,-39)

a_necro_initiate (50%)
a_zombie (50%)

befallen_71, range=56 (-384,-175,-39)

befallen_72, range=58 (-491,-166,-39)

a_dread_bone (50%)
a_dread_bone (50%)

befallen_74, range=98 (-533,-159,-39)

a_burnt_zombie (50%)
a_lesser_mummy (50%)

befallen_94, range=61 (-439,-211,-38)

befallen_95, range=92 (-429,-242,-39)

befallen_96, range=68 (-437,-82,-40)

a_necro_neophyte (50%)
a_zombie (50%)

befallen_97, range=40 (-416,-114,-39)

a_lesser_mummy (50%)
a_sturdy_skeleton (50%)

befallen_99, range=65 (-392,-100,-38)

a_greater_skeleton (50%)
a_lesser_mummy (50%)

befallen_100, range=69 (-488,-105,-38)

a_large_plague_rat (50%)
a_necro_neophyte (50%)