NPCs composing that spawngroup :

#Overseer_Dlubish (64%)

a_goblin_backbiter (62%)

a_goblin_blightcaller (64%)

a_goblin_boneseer (64%)

a_goblin_dirttracer (43%)

a_goblin_flashdrowser (64%)

a_goblin_slavedriver (72%)

a_goblin_stalagknight (62%)

a_goblin_stonechanter (64%)

a_goblin_warder (72%)

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

nurga_91, range=3 (-1993,1381,-304)

nurga_124, range=64 (-1961,1327,-319)

#Slave_Driver_Nimol (100%)

nurga_132, range=31 (-2001,1354,-306)

nurga_157, range=60 (-1986,1324,-309)

a_goblin_blackguard (60%)
a_goblin_blackguard (60%)

nurga_158, range=98 (-1938,1301,-315)

a_goblin_death_caster (100%)

nurga_a_goblin_slavedriver1_takp_import_v0, range=56 (-1986,1328,-308)