NPCs composing that spawngroup :

a_goblin_death_knight (33%)

a_goblin_overseer (33%)

a_goblin_warder (34%)

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

nurga_99, range=36 (-1637,630,-221)

a_goblin_flame_chanter (50%)
a_goblin_spirit_chanter (50%)

nurga_129, range=51 (-1669,643,-221)

a_goblin_blackguard (50%)
a_goblin_death_knight (50%)

nurga_176, range=162 (-1552,726,-221)

a_goblin_blackguard (50%)
a_goblin_spirit_chanter (50%)

nurga_178, range=41 (-1689,605,-221)

a_goblin_blackguard (50%)
a_goblin_flame_chanter (50%)

nurga_179, range=161 (-1671,436,-205)

a_goblin_death_knight (100%)

nurga_180, range=189 (-1627,408,-205)

nurga_a_goblin_slavedriver1_takp_import_v0, range=39 (-1687,608,-220)

nurga_a_goblin_stalagknight9_takp_import_v0, range=3 (-1646,595,-220)