Thalassicus
Bytes and Nibblers
Most of the poorly-ranked AIs in this poll have the "conqueror" personality type. It's the type which depends on conquering citystates to succeed. To work around Firaxis' decision to block AIs attacking citystates in the early game, in v151.11 each "conqueror" AI is now set to permanent war with its nearest citystate neighbor at the start of the game. Hopefully this will encourage them to attack the vulnerable citystate instead of wasting time and energy running across a continent to attack a major civ, losing the war, and falling behind.