NPCs composing that spawngroup :

a_ghoul (33%)

a_necro_theurgist (33%)

a_necro_theurgist (34%)

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

befallen_57, range=122 (-750,32,-66)

befallen_54, range=29 (-652,113,-66)

a_greater_skeleton (50%)
a_necro_acolyte (50%)

befallen_52, range=95 (-678,35,-67)

befallen_51, range=168 (-843,154,-66)

befallen_50, range=162 (-835,162,-66)

a_greater_skeleton (50%)
a_lesser_mummy (50%)

befallen_9, range=170 (-705,-38,-67)

befallen_76, range=153 (-647,-21,-66)

befallen_77, range=170 (-627,-33,-67)

befallen_85, range=140 (-816,136,-66)

a_greater_skeleton (50%)
ice_boned_skeleton (50%)

befallen_86, range=169 (-818,38,-67)

a_ghoul (33%)
a_ghoul (33%)
a_ghoul (34%)

befallen_106, range=195 (-486,86,-77)

befallen_110, range=185 (-494,95,-76)

befallen_116, range=143 (-540,85,-39)

befallen_117, range=94 (-591,88,-39)

befallen_118, range=112 (-568,161,-39)

befallen_119, range=143 (-546,191,-38)

befallen_120, range=157 (-519,130,-39)

befallen_121, range=166 (-511,152,-39)

befallen_123, range=147 (-571,26,-39)

befallen_124, range=164 (-556,18,-38)