NPCs composing that spawngroup :

a_fog_golem (20%)

a_mist_golem (16%)

a_phantom (16%)

a_wraith (16%)

greater_war_boned_skeleton (16%)

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

citymist_35, range=42 (102,-350,3)

a_bewildered_wanderer (50%)
a_haze_golem (50%)

citymist_54, range=42 (133,-353,39)

a_fog_golem (34%)
a_rambling_fanatic (33%)

citymist_61, range=52 (130,-364,-13)

citymist_80, range=96 (29,-344,255)

#Gyrating_Green_Slime (10%)
gyrating_goo (90%)

citymist_83, range=53 (77,-343,256)

greater_war_boned_skeleton (100%)

citymist_85, range=61 (121,-373,256)

citymist_87, range=33 (136,-342,275)

citymist_92, range=49 (162,-284,76)

citymist_93, range=96 (212,-281,76)

citymist_96, range=42 (79,-314,77)

citymist_116, range=89 (182,-378,65)

citymist_127, range=99 (219,-328,274)

citymist_128, range=69 (189,-325,274)

citymist_129, range=84 (201,-286,275)

greater_war_boned_skeleton (25%)
greater_war_boned_skeleton (25%)

citymist_132, range=92 (189,-250,1)

citymist_159, range=49 (105,-265,2)