Most powerful  9 Titans from  attack on titan

Cart Titan

Though very helpful in battle, the Cart Titan is the least powerful of the Nine Titans. Pieck has been the only known user of the Cart Titan.

jaw titan

Fastest of the Nine Titans and attacks its opponents with its incredibly sharp teeth. There have been four known users of the Jaw Titan, Marcel, Ymir, Porco,and Falco.

Colossal Titan

Though he is the biggest of all the titans, he is also the slowest. He can control his steam and cause explosions to knock enemies back or kill them.

female titan

Female Titan has the ability to summon normal and abnormal titans into battle, which is how so many of them got into Shiganshina. 

war hammer titan

It could produce and manipulate structures that were made of hardened Titan flesh It can create weapons, or anything it needs, from underground.

beast titan

Slightly larger than most Titans, he had the ability to throw objects with great accuracy and  destructive capability and the ability to turn Subjects of Ymir into Titans.

armored titan

Most powerful in terms of physical strength due to his skin protecting him. It is very difficult for him to get injured compared to the other Nine Titans as he serves as his own shield.

attack titan

Can see through the memories of both its past and its future holders, and has fought for freedom throughout the generations. It is currently in the possession of Eren Jaeger.

founding titan

The Founding Titan can control all of the Eldians, including their  bodies and make the titans do whatever they wanted. Due to how much power he has, it is the strongest of them all.