NPCs composing that spawngroup :

a_goblin_rock_sneak (100%)

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

droga_34, range=27 (251,887,-221)

a_goblin_dirt_criminal (100%)

droga_40, range=137 (139,881,-221)

droga_45, range=171 (255,1045,-221)

a_goblin_bone_knight (50%)
a_goblin_flame_master (50%)

droga_53, range=70 (323,927,-221)

a_goblin_bone_knight (33%)
a_goblin_earth_mystic (33%)

droga_141, range=140 (264,1015,-221)

a_goblin_bone_knight (33%)
a_goblin_dirt_criminal (33%)

droga_234, range=158 (284,1033,-221)

a_goblin_bone_caster (50%)
a_goblin_flame_master (50%)

droga_235, range=6 (271,871,-221)

a_goblin_bone_caster (50%)
a_goblin_dirt_criminal (50%)

droga_236, range=45 (232,885,-221)

a_goblin_earth_mystic (50%)
a_goblin_flame_master (50%)

a_goblin_cavehunter_189446, range=163 (270,1038,-219)

a_goblin_rock_sneak (100%)

droga_a_goblin_taskmaster0_takp_import_v0, range=160 (145,967,-220)