Papazuki is cringe by default, only thing is it's a play on his actual name, rolls off the tongue and it's kind of clever.
God King Shanks is so over the top that I actually kind of like it, it's so damn cringe that it's not cringe anymore you know? It's like a meme.
Godfy is so dumb that it's actually funny to me as well, I take it as Luffy fanboys going full retard when everyone turned on Luffy in Wano for being the chosen one.
Grandmaster is cult-like, damn near worship. High levels of cringe there.
It's hard to choose one, normally I would say God King Shanks because it's an entire incoherent sentence lmfao, but like I said, I actually find that one funny. There's nothing funny about Grandmaster (like God King Shanks, Godfy) , or clever (Papazuki), it's simply just cringe and nothing else.