The plane in the upper left-hand corner is the least airworthy.
The plane in the lower left-hand corner is the most airworthy.
The plane in the upper right-hand corner is the longest.
The plane in the lower right-hand corner has the most passenger capacity.
Unfortunately, I don't think commercial jets are going to get any bigger anytime soon. The biggest commercial passenger jet ever built was the Airbus A380. It could hold up to 853 people. The first A380 was delivered on October 15, 2007 to Singapore Airlines. The last A380 was delivered on December 16, 2021 to Emirates. Only 254 were built.
https://en.wikipedia.org/wiki/Airbus_A380