NPCs composing that spawngroup :

#Blackguard_Thabis (20%)

a_goblin_sneak (80%)

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

nurga_114, range=28 (-1270,-48,-189)

a_goblin_blood_knight (50%)
a_goblin_taskmaster (50%)

nurga_115, range=35 (-1294,-89,-189)

a_goblin_death_caller (50%)
a_goblin_flame_dancer (50%)

nurga_116, range=82 (-1343,-86,-189)

a_goblin_sneak (50%)
a_goblin_taskmaster (50%)

va_nurga_508009, range=57 (-1318,-83,-188)

va_nurga_508013, range=40 (-1293,-51,-188)