Ill argue for penn
He won the title multiple time at lw, defended his title multiple time, won multiple title aftet beating gomi, the other lw goat contender at the time, he went to ww and fuck up the champion, like fuck him up easy, like fucking animal maul that country boi matt huges and fuck up george, he fuck geoege up the first time around. Hughes and GSP are basically the WW GOATs of different generation, Penn beat them both up the first time around.
The guy showed an amazing array of skills and it seem so natural too, first time around, penn was such a beast, people even know, the man went to w/e the fuck weight class to fuck whoever he wants. He fought a hw lyoto in japan.
Penn was untouchable by the nightmare sanchez when sanchez was fucking guida who was beating pettis and dropping b. henderson at the time.
I said it before, penn was someone who you cant takedown, cant out box, cant knockdown because dat mr potatoe head, cant out grapple. If you are the same size as penn in his prime, you are fucked.
Penn loses alot because he take on all kinds of challenges and have been outspoken against roid heads. He even fought Rory fucking mac. He dont need the money but hes fighting to motivate hawaiins, taking loses and continue fighting as a warrior. Thats why its so heart breaking to see him get fucked up again and again.
Thats why hes so respected