NPCs composing that spawngroup :

a_cracked_skeleton (33%)

a_necro_initiate (33%)

a_necro_initiate (34%)

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

befallen_85, range=54 (-483,71,-78)

a_greater_skeleton (50%)
ice_boned_skeleton (50%)

befallen_89, range=60 (-456,80,-39)

befallen_90, range=88 (-437,104,-39)

befallen_91, range=93 (-372,29,-39)

befallen_92, range=93 (-372,7,-39)

befallen_93, range=51 (-456,-31,-38)

a_greater_skeleton (50%)
a_sturdy_skeleton (50%)

befallen_106, range=69 (-486,86,-77)

befallen_109, range=31 (-438,37,-75)

ice_boned_skeleton (50%)
ice_boned_skeleton (50%)

befallen_110, range=80 (-494,95,-76)

befallen_111, range=13 (-470,7,-72)

befallen_112, range=67 (-401,-2,-67)

befallen_114, range=89 (-400,-41,-38)

befallen_115, range=31 (-449,47,-38)

befallen_116, range=99 (-540,85,-39)

befallen_124, range=91 (-556,18,-38)