NPCs composing that spawngroup :

a_goblin_sneak (100%)

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

nurga_12, range=83 (-1249,-1118,-173)

a_goblin_blood_knight (50%)
a_goblin_warder (50%)

nurga_134, range=89 (-1145,-1231,-173)

nurga_138, range=85 (-1165,-1256,-173)

a_dangerous_mine_rat (50%)
a_goblin_death_caller (50%)

nurga_139, range=32 (-1211,-1172,-173)

a_dangerous_mine_rat (50%)
a_goblin_sneak (50%)

nurga_140, range=90 (-1159,-1141,-173)

nurga_143, range=41 (-1213,-1237,-173)

a_dangerous_mine_rat (50%)
a_goblin_flame_dancer (50%)

nurga_144, range=90 (-1143,-1172,-173)

a_goblin_death_caller (50%)
a_goblin_spirit_lord (50%)

nurga_145, range=97 (-1319,-1162,-173)

va_nurga_508009, range=85 (-1249,-1116,-172)

va_nurga_508013, range=99 (-1321,-1162,-172)

va_nurga_508058, range=38 (-1258,-1225,-172)