NPCs composing that spawngroup :

a_goblin_bone_knight (100%)

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

droga_18, range=41 (96,1356,-221)

a_deadly_drogan_spider (50%)
a_goblin_earth_mystic (50%)

droga_20, range=37 (151,1365,-221)

a_goblin_bone_knight (50%)
a_goblin_whip_cracker (50%)

droga_23, range=34 (146,1302,-221)

a_goblin_bone_caster (50%)
a_goblin_flame_master (50%)

a_goblin_cavehunter_189444, range=42 (150,1371,-219)

a_goblin_rock_sneak (100%)

droga_a_goblin_taskmaster0_takp_import_v0, range=34 (144,1301,-220)

droga_223163_takp_import_v0, range=72 (193,1370,-223)