First rainbow goblin after transmogging my DH to look like Goblin Slayer yielded results. Highly suggest doing so as a legitimate farming strat : r/ Diablo
Somewhere Over the Rainbow... Goblin
Diablo 3 Rainbow Goblin Farming Route with Commentary including Goblin Spawn Chance Data - YouTube
Goblin Statistics | Nephalem Notes
Double goblins in season 22? - General Discussion - Diablo 3 Forums
After 850 rainbow portal runs, I finally ascended to the Cosmo! : r/diablo3
Diablo 3 Best Goblin Farm Routes: Rainbow Goblins & Pet (Menagerist) Goblins (Guide) - YouTube