NPCs composing that spawngroup :

a_yun_ghoul_wizard (100%)

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

gukbottom_18, range=81 (852,-719,-136)

gukbottom_163, range=68 (916,-665,-190)

a_wan_ghoul_knight (50%)
a_zol_ghoul_knight (50%)

gukbottom_159, range=86 (901,-651,-190)

a_zol_ghoul_knight (100%)

gukbottom_155, range=58 (880,-761,-190)

a_tal_ghoul_wizard (100%)

gukbottom_130, range=81 (915,-652,-190)

a_yun_ghoul_wizard (34%)
a_zol_ghoul_knight (66%)

gukbottom_92, range=39 (907,-763,-193)