NPCs composing that spawngroup :

a_goblin_blood_caster (100%)

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

nurga_43, range=85 (-2062,-1522,-173)

nurga_44, range=96 (-2110,-1502,-173)

a_goblin_blood_caster (50%)
a_goblin_spirit_weaver (50%)

nurga_45, range=27 (-2129,-1598,-191)

a_goblin_back_biter (50%)
a_goblin_life_drinker (50%)

a_goblin_flashdrowse_189520, range=119 (-2048,-1491,-171)

a_goblin_flashdrowser (100%)

nurga_a_goblin_slavedriver1_takp_import_v0, range=83 (-2065,-1523,-172)

nurga_a_goblin_stalagknight9_takp_import_v0, range=119 (-2048,-1491,-172)