NPCs composing that spawngroup :

an_amorphous_mass (100%)

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

necropolis_12, range=65 (1587,-119,45)

necropolis_42, range=195 (1695,3,-155)

necropolis_43, range=55 (1488,-56,-155)

necropolis_45, range=144 (1555,-238,-155)

necropolis_47, range=56 (1480,-64,-155)

necropolis_92, range=191 (1701,-18,-155)

necropolis_138, range=117 (1453,-188,-155)

necropolis_156, range=185 (1421,-249,-155)

necropolis_158, range=166 (1507,69,-155)

an_inactive_trap_190125, range=58 (1481,-59,-148)

an_inactive_trap_190126, range=130 (1488,-221,-281)

an_inactive_trap_190127, range=193 (1503,-288,-142)

an_inactive_trap_190129, range=192 (1513,96,-153)

an_inactive_trap_190130, range=77 (1603,-91,-153)

Echoman_190133, range=69 (1586,-60,8)

an_empty_nest_190165, range=137 (1450,19,3)

an_empty_nest_190166, range=53 (1573,-122,-153)