NPCs composing that spawngroup :

a_shaded_torch (100%)

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

frozenshadow_87, range=77 (615,-91,220)

frozenshadow_136, range=50 (620,-18,302)

#a_shrouded_bat (100%)

frozenshadow_137, range=52 (536,12,318)

a_shadow_familiar (50%)
a_shadow_familiar (50%)

frozenshadow_139, range=98 (472,-22,304)

a_blood_familiar (50%)
a_blood_familiar (50%)

frozenshadow_153, range=40 (556,-66,307)

a_shaded_torch (50%)
a_shadow_familiar (50%)

a_shaded_torch_189743, range=91 (486,-65,307)

a_shaded_torch (100%)

a_shaded_torch_189745, range=60 (522,-65,307)

a_shaded_torch (100%)

a_shaded_torch_189749, range=66 (570,38,307)

a_shaded_torch (100%)

frozenshadowan_undead_musician001170669982, range=30 (543,-44,218)

an_undead_musician (100%)

frozenshadowan_undead_bridesmaid003170573957, range=39 (549,-63,218)

an_undead_bridesmaid (100%)

frozenshadowa_golem_usher011170349074, range=96 (477,-57,244)

a_golem_usher (100%)