NPCs composing that spawngroup :

A_Dark_Sending_ (2%)

A_Dark_Vision (2%)

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

griegsend1304010, range=82 (-432,2343,-55)

griegsend1304221, range=80 (-507,2313,-55)

a_wretched_servant (50%)
servant_of_the_magistrate (50%)

A_Dark_sending_1432776, range=84 (-529,2262,-52)

A_Dark_Sending_ (2%)
A_Dark_Vision (2%)

A_Dark_Vision_1432905, range=94 (-529,2218,-51)

A_Dark_Vision_1432907, range=67 (-512,2262,-51)

A_Dark_Vision_1432909, range=53 (-498,2262,-52)

A_Dark_Vision_1432916, range=67 (-454,2329,-53)

A_Dark_Vision (2%)
A_Dark_Vision (2%)

A_Dark_Vision_1432923, range=67 (-378,2262,-52)

An_Occisor_Acerbus (2%)
A_Dark_Sending_ (2%)