NPCs composing that spawngroup :

a_shadowknight (33%)

a_shadowknight (34%)

ice_boned_skeleton (33%)

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

befallen_85, range=85 (-483,71,-78)

a_greater_skeleton (50%)
ice_boned_skeleton (50%)

befallen_89, range=90 (-456,80,-39)

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

befallen_106, range=70 (-486,86,-77)

befallen_110, range=59 (-494,95,-76)

befallen_116, range=73 (-540,85,-39)

befallen_118, range=57 (-568,161,-39)

befallen_119, range=52 (-546,191,-38)

befallen_120, range=23 (-519,130,-39)