S
Not having a crew doesn't stop mihawk from beating the other yonkous and becoming yonkou, so if he is warlord, it's because he is part of their group of strength, not yonkous.
if mihawk would beat kaidou, wano would be free and people of wano would hold mihawk as their savior and wano would be considered to be under mihawk, same for cake island, whatever shanks island is.
luffy himself didn't even need to beat yonkou to become yonkou.
In wci he only beat yc1 and yc3 and because of that was considered 5th yonkou, mihawk is not even that
Blackbeard only beat Marco and became yonkou
if mihawk would beat kaidou, wano would be free and people of wano would hold mihawk as their savior and wano would be considered to be under mihawk, same for cake island, whatever shanks island is.
luffy himself didn't even need to beat yonkou to become yonkou.
In wci he only beat yc1 and yc3 and because of that was considered 5th yonkou, mihawk is not even that
Blackbeard only beat Marco and became yonkou