NPCs composing that spawngroup :

a_hamal_skeleton (25%)

a_mortiferous_golem (25%)

elementalbone_skeleton (25%)

hexbone_skeleton (25%)

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

charasis_7, range=92 (117,-458,40)

an_undertaker_skeleton (50%)
a_hamal_skeleton (50%)

charasis_16, range=37 (27,-543,23)

a_helot_spectre (100%)

charasis_17, range=38 (26,-520,23)

a_helot_spectre (50%)
hexbone_skeleton (50%)

charasis_88, range=98 (135,-600,22)

charasis_89, range=89 (152,-533,22)

charasis_90, range=73 (136,-532,22)

charasis_192, range=67 (65,-600,22)

charasis_193, range=69 (80,-600,22)

charasis_194, range=17 (80,-532,22)