NPCs composing that spawngroup :

a_goblin_death_knight (100%)

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

nurga_99, range=196 (-1637,630,-221)

a_goblin_flame_chanter (50%)
a_goblin_spirit_chanter (50%)

nurga_177, range=161 (-1649,596,-221)

nurga_178, range=169 (-1689,605,-221)

a_goblin_blackguard (50%)
a_goblin_flame_chanter (50%)

nurga_180, range=52 (-1627,408,-205)

nurga_a_goblin_slavedriver1_takp_import_v0, range=172 (-1687,608,-220)

nurga_a_goblin_stalagknight9_takp_import_v0, range=160 (-1646,595,-220)