NPCs composing that spawngroup :

a_goblin_back_biter (33%)

a_goblin_spirit_weaver (33%)

a_goblin_warder (34%)

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

nurga_42, range=85 (-2102,-1598,-191)

a_goblin_blood_caster (100%)

nurga_44, range=52 (-2110,-1502,-173)

a_goblin_blood_caster (50%)
a_goblin_spirit_weaver (50%)

a_goblin_flashdrowse_189520, range=34 (-2048,-1491,-171)

a_goblin_flashdrowser (100%)

va_nurga_508003, range=3 (-2065,-1523,-172)

va_nurga_508009, range=34 (-2048,-1491,-172)