Conor McGregor could have been in the GOAT discussion but he decided that a big pay check & crossover boxing bout with Floyd Mayweather was worth more than defending either of the 2 UFC world titles he had. Post-UFC 205 was a crossroads for him, he chose the money path > legacy

Ps - This isn’t even necessarily a harsh criticism of Conor, but more of a personal observation in regards to where he stands in present day GOAT standings. I don’t blame him for taking the Floyd payday, but when it solely comes down to GOAT rankings, that career choice cost him.