NPCs composing that spawngroup :

a_cracked_skeleton (34%)

a_putrid_skeleton (33%)

a_putrid_skeleton (33%)

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

befallen_31, range=21 (-164,80,-9)

a_giant_rat (50%)
a_plague_rat (50%)

befallen_29, range=26 (-136,118,-10)

befallen_28, range=81 (-216,139,-10)

a_large_plague_rat (50%)
a_putrid_skeleton (50%)

befallen_27, range=91 (-209,162,-12)

befallen_26, range=62 (-130,154,-11)

befallen_25, range=48 (-159,47,-5)

a_plague_rat (100%)

befallen_24, range=68 (-192,42,-6)

a_plague_rat (50%)
a_plague_rat (50%)

befallen_4, range=79 (-216,52,-11)

a_cracked_skeleton (50%)
a_putrid_skeleton (50%)

befallen_122, range=89 (-201,22,-12)

Zeek (100%)

befallen_125, range=99 (-77,25,3)