NPCs composing that spawngroup :

a_raving_lunatic (100%)

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

citymist_7, range=84 (-261,255,40)

a_deranged_madman (50%)
greater_war_boned_skeleton (50%)

citymist_20, range=52 (-183,169,3)

citymist_24, range=53 (-237,226,3)

a_raving_lunatic (50%)
a_savage_mutant (50%)

citymist_25, range=86 (-97,209,3)

citymist_27, range=96 (-99,173,2)

citymist_32, range=78 (-222,153,4)

citymist_111, range=79 (-262,227,39)

citymist_222970_takp_import_v0, range=97 (-98,173,3)

citymist_222981_takp_import_v0, range=78 (-259,203,41)

citymist_223449_takp_import_v0, range=99 (-86,200,3)

citymist_223448_takp_import_v0, range=75 (-111,197,3)

an_army_behemoth (10%)
a_fog_golem (90%)

citymist_222963_takp_import_v0, range=97 (-191,318,-7)