The parallels are there
Shiryu will be who zoro needs to upgrade his observation haki against to deal with
Plus both are very similar with the whole blood thirsty demon swordsmen from hell
Reading the King/Doffy parallels are very forced lol. They work if you stretch them very thin.
King/Queen/Kata both have one thing in common, alternatively. They're each intentional reflections of their oppponents.
Katakuri has similar powers to Luffy, they fought in the
mirror world and both work overtime to defend their crew/family
Queen is a fat, perverted cyborg versus Sanji, a perverted chef augmented by science.
King is a stoic swordsman loyal to his captain, who rescued him. Zoro is well... More or less the same. Both even made the same vow to never lose.
They're each blatantly inversions of their Strawhat opponent lol. there's no need to invent parallels like "both lived on the redline" or "bird", which hold no weight.