NPCs composing that spawngroup :

sebilite_golem (80%)

sebilite_guardian (20%)

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

sebilis_223031, range=76 (-812,149,-49)

froglok_krup_knight (50%)
froglok_krup_shaman (50%)

sebilis_223047, range=44 (-917,100,-165)

sebilis_223067, range=74 (-813,121,-49)

sebilis_223083, range=33 (-916,117,-165)

sebilis_223106, range=32 (-909,109,-165)

myconid_reaver (80%)
myconid_spore_king (20%)