NPCs composing that spawngroup :

#Overseer_Dlubish (10%)

a_goblin_backbiter (13%)

a_goblin_blightcaller (4%)

a_goblin_boneseer (4%)

a_goblin_dirttracer (8%)

a_goblin_flashdrowser (4%)

a_goblin_slavedriver (27%)

a_goblin_stalagknight (24%)

a_goblin_stonechanter (4%)

a_goblin_warder (2%)

NPCs spawning around that spawngroup :
(Max range : 200)

nurga_1, range=156 (-1704,1429,-276)

#Taskmaster_Yajo (100%)

nurga_93, range=170 (-1643,1351,-273)

#Death_Knight_Donkot (20%)
a_goblin_death_knight (80%)

nurga_94, range=136 (-1703,1516,-276)

nurga_97, range=136 (-1656,1401,-269)

nurga_98, range=145 (-1673,1405,-269)

a_goblin_death_knight (50%)
a_goblin_spirit_chanter (50%)

nurga_102, range=98 (-1475,1539,-300)

a_goblin_overseer (50%)
a_goblin_overseer (50%)

nurga_126, range=100 (-1477,1549,-300)

a_goblin_spirit_chanter (100%)

nurga_160, range=2 (-1568,1506,-300)

a_goblin_death_caster (50%)
a_goblin_spirit_chanter (50%)

nurga_161, range=199 (-1695,1657,-320)

a_goblin_death_knight (50%)
a_goblin_overseer (50%)

nurga_162, range=190 (-1676,1348,-276)

a_goblin_overseer (50%)
a_goblin_spirit_chanter (50%)

nurga_163, range=73 (-1528,1566,-300)

a_goblin_blackguard (50%)
a_goblin_overseer (50%)

nurga_164, range=110 (-1496,1589,-300)

nurga_165, range=138 (-1458,1590,-300)

a_goblin_death_caster (50%)
a_goblin_spirit_chanter (50%)

nurga_166, range=116 (-1451,1507,-300)

nurga_167, range=141 (-1430,1540,-300)

nurga_a_goblin_slavedriver1_takp_import_v0, range=134 (-1653,1400,-268)

nurga_a_goblin_backbiter5_takp_import_v0, range=140 (-1431,1538,-300)

nurga_a_goblin_dirttracer6_takp_import_v0, range=141 (-1670,1407,-268)