NPCs composing that spawngroup :

#Hsranitu_the_Webspinner (50%)

Eric_Von_Schnelling (50%)

Hidagard_the_Dark_Martyr (50%)

Lesser_Orc_Chieftain (50%)

Notable_Shadowmane (50%)

Orc_Chieftain (50%)

Shadowmane_Advisor (50%)

Shadowmane_Sage (50%)

Shiliskin_Councilor (50%)

Skeletal_Functionary (50%)

Skeletal_Scribe (50%)

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

dreadspire63376, range=34 (2568,-186,128)

a_shadowmane_steelclaw (50%)

dreadspire63378, range=26 (2570,-208,128)

a_shadowmane_softpaw (50%)

dreadspire63380, range=14 (2597,-192,128)

a_shadowmane_shaman (50%)

dreadspire63382, range=82 (2642,-138,127)

#Alex_Hutchison (50%)
a_guest_of_Dreadspire (50%)

dreadspire63386, range=33 (2628,-195,128)

a_shadowmane_steelclaw (50%)

dreadspire63387, range=33 (2629,-207,128)

dreadspire_monocle_1_129, range=59 (2655,-209,128)

a_shadowmane_masticator (50%)

dreadspire_monocle_1_138, range=82 (2642,-138,128)

a_shadowmane_masticator (50%)

dreadspire_monocle_1_140, range=14 (2597,-192,127)

an_ascended_resident (50%)

dreadspire_monocle_1_141, range=26 (2570,-208,127)

an_ascended_resident (50%)

dreadspire_monocle_1_143, range=34 (2568,-186,128)

a_shadowmane_masticator (50%)

dreadspire_monocle_1_144, range=57 (2582,-150,129)

a_brutish_manservant (50%)