Holy Knights feel like endgame CD opponents. I think they'll fight some Admirals like Fuji and Kuzan, some others like Sabo or a bunch of Revs at the same time, Zoro, Sanji, Law, etc. They are like the perfect endgame threat before Imu who's guaranteed god tier
Not sure about the numbers I'm expecting no more than 5-6 tbh. Silhouettes have never been accurate
I see Holy Knights in the same sense I see Admirals. They are Marejois' strongest force, they protect the gods hence they should be at the minimum low top tiers
I do agree that none of them will be above a Gorosei but mostly cuz of hax. But probably 2-3 can take on a Gorosei at once