While Giyu Tomioka is an exceptionally skilled swordsman and Hashira, he certainly isn't the strongest. Both the manga and anime affirm this theory. The strongest Hashira in Demon Slayer is none other than Gyomei Himejima. The Stone Hashira's raw power is leagues above his peers.
2) Sanemi Shinazugawa
He dedicated all his time and effort towards perfecting his skills as a swordsman which was shown during the fight against both Muzan and Kokushibo.
Sound Hashira
He is the fastest Hashira, and the second physically strongest. Obviously, then, Tengen Uzui is rather proud. He is demanding, fussy, boastful, and prone to selfishness. But he is also ultimately kind and caring, with great love for his three wives as well as the other Hashira.
Tanjiro decapitates Akaza with the Hinokami Kagura: Setting Sun Transformation. Akaza was bewildered, wondering how Tanjiro did not have any fighting spirit, comparing this feeling to fighting against a plant. He acknowledges that Tanjiro surpassed his speed.
1) Shinobu Kocho
The Insect Pillar of Demon Slayer Corps, Shinobu is undeniably the smartest individual. She might not be physically stronger than others, but her intelligence is what kept her going.
As it turns out, Tanjiro has received a few promotions during his service. However, saying that Tanjiro has become a Kanoe doesn't mean much on its own. The Corps' ranks and functions are fairly straightforward.
In terms of physical strength, Tengen Uzui is far from being the weakest Hashira. While his feats throughout the Daki and Gyutaro battles certainly displayed this, there's additional evidence to show that he's not the weakest Hashira.
Can a Hashira solo a upper 3? If we take out Gyomei, then no Hashira can go solo against any of the Upper 3 demons. Gyomei is the only strongest current Hashira that can go head to head against Upper 1 without dying in minutes.
Sanemi is quite possibly one of the rudest Hashira to have ever existed. Although he's a powerful individual, as seen in the manga during his fight against Doma, one of Muzan's 12 Kizuki, he severely lacks people skills. Sanemi's rise to unpopularity stemmed from his treatment of Nezuko the first time he saw her.
Tanjuro Kamado was the name of Tanjiro Kamado's father. He passed away before the event of the main story of the Demon Slayer. It is not mentioned how long Tanjuro had passed before the story, but in several flashback scenes, we can see him interacting with a younger Tanjiro.
Demon Slayer's Tengen Uzui is considered to be one of the weakest Hashira due to almost losing this fight, but the fact is that Tengen only looks weak when compared to the most overpowered Hashira.
Despite his age, Muichiro is immensely skilled in swordsmanship, and his strength can overpower even the older Hashiras of the Demon Slayer Corps. He single-handedly defeated Upper Rank Five, Gyokko.
5/14 Fastest Hashira In Running
Despite his large and muscular build, Tengen Uzui is the fastest runner among the Hashira.
But, when it comes to who was the better Hashira, Tengen wins by a considerable margin. His experiences as a shinobi and as a Demon Slayer far exceeded Rengoku's, and led to him developing far superior strength, battle tactics, and techniques.
We first see Doma when he is still the Upper Moon Six while he is in the middle of eating a geisha. Later he becomes even stronger and rises to the position of Upper Moon Two. He dies because of the lethal amount of poison he absorbed through Shinobu Kocho's body followed by Kanao Tsuyuri beheading him.
However, Doma remained unfazed by the deaths of his own parents. When he was twenty years old, Doma met Muzan Kibutsuji, who granted him power and turned him into a demon.
2) Sanemi Shinazugawa
His fast movement, combined with his excellent swordsmanship, makes him a remarkable demon slayer. Most of his attacks are purely offensive due to his breathing style. Being a user of wind breathing, he is undoubtedly fast.
According to Tengen Uzui, Gyomei was one of the two people who became a Hashira only two months after picking up a sword, the other being Muichiro Tokito.
Unfortunately, the answer to this question would be, no, he did not. Zenitsu, along with Tanjiro and Inosuke got way stronger than average corps members with training. In fact, he became one of the very few to even invent a new form of Thunder Breathing. However, his dream of becoming a Hashira was never realized.