In summation. While Yoriichi seems to fall short to Gyomei Himejima in the strength categories given the information we have, Yoriichi still reigns supreme overall.
5) Yoriichi
Case in point: he was the only one who could single-handedly take on Muzan and drive him to a corner. Yoriichi would be able to defeat every single Hashira on this list without breaking a sweat. Such was his reputation and skill in swordsmanship.
So in the end DEMON KING TANJIRO IS A WHOLE LOT MORE POWERFUL THAN YORIICHI. Also not to mention that Tanjiro is literally invincible I mean to be honest Tanjiro could beat anyone in all of anime and in other series bc of his IMMENSE power.
Aside from these skills, in the Infinity castle arc, Gyomei was able to hold his own against Kokushibo while fighting him alongside Sanemi Shinazugawa. Kokushibo acknowledges that throughout the centuries he has fought numerous swordsmen, but no one was as strong as Gyomei.
Rimuru Tempest becomes a God towards the end of the series and can travel back in time and travel between worlds. His space-time abilities alone would be enough to beat Yoriichi. This character is often stated to be stronger than Goku, despite the community being quite divided on this topic.
If we are talking about pure strength, skill, and speed, Yoriichi wins. However, Deku can float, store energy, and keep using Fa Jin until it wears Yorichii out. If it was a battle on land, Yoriichi would win, but Deku beats Yoriichi here.
1) Yoriichi Tsugikuni
Yoriichi was the only person who could defeat the progenitor of all the demons, Muzan Kibutsuji. Doma is an inferior opponent, as he won't even last a second in front of Yoriichi.
Gyomei can defeat Akaza without even awakening his Demon Slayer mark.
Gyomei Himejima is the strongest Hashira in Demon Slayer. Even the Hashiras who are filled with pride, acknowledged his skill and strength. As a child he was able to save a child from a demon by physically beating it for hours. He, along with Sanemi Shinazugawa were able to beat the Upper Moon 1, Kokushibo.
As a result, Tengen Uzui has to deal with the moniker of being the least powerful Hashira around. Of course, that's not the worst thing in the world, as all Hashira are strong. He's still incredibly powerful and can give any demon a run for their money.
Yoriichi was incredibly proficient in his Sun Breathing, being able to take down demons effortlessly and even overwhelm the Demon King and strongest Upper Rank.
Seeing into the Transparent World, Yoriichi discerned Muzan had seven hearts and five brains that change position within his body. Seeing his chance, he combined all his forms into a single attack, cutting through them all and overpowering Muzan completely.
Akaza always held back too much, it's clear from his movements that he's not fully utilizing his martial prowess, meaning yoriichi should be able to win.
Yoriichi was born with the Demon Slayer mark and prowess in swordsmanship. His powers were beyond comparison as he defeated Muzan once and had him on the verge of death until he managed to escape.
Giyu Tomioka and Sanemi Shinazugawa attend as the final surviving members of the Hashira, and together they they get a confirmation that not only are the demons all eradicated, but that the Demon Slayer Corps will be disbanding.
Not to mention Yoriichi can hardly damage Narutos Kurama avatar. Yeah, Naruto would win.
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.
It affects even the strongest of the Upper Rank demons. This would be effective against Akaza because the only people he refuses to eat are women, since that goes against his morals. Sanemi also has excellent control of his muscles, saving himself from fatal injuries by closing them up himself.
At some point, Daki fought, killed and ate seven Hashira. Two days before Tanjiro Kamado and company infiltrated the Entertainment District, Daki was confronted by Omitsu, the manager of the Kyogoku House, over her mistreatment of the staff.
7/10 Can't Beat: Gyomei
Without giving too much away, Gyomei arguably defeats much stronger demons than Giyu does throughout the manga as well — something fans will hopefully get to witness during future seasons of the anime.
Unique Weapon: Gyomei wields a hand axe complete with a spiked flail attached to the hilt through a long chain. To wield his unique weapon he uses the sound of the chain to judge the position of the flail and axe, covering for and even taking advantage of his blindness.
Muichiro Tokito, Genya Shinazugawa, Sanemi Shinazugawa and Gyomei Himejima vs Kokushibo is a battle that takes place in the Infinity Castle, that occurs between Demon Slayer Genya Shinazugawa and three Hashira, Muichiro Tokito, Sanemi Shinazugawa and Gyomei Himejima against Upper Rank One Kokushibo.
The only Demon he despises the most is the Upper Rank Two: Doma. It is quite a shocker that the second most potent Demon in the Demon Slayer is not Muzan's favorite.
Fun fact: The reason why Enmu was able to say Muzan's name out loud without dying is because they're married!
Yes, Yoriichi can 100 percent solo the demon slayer verse without being a demon. He is an absolute beast who has unparalleled physical and mental abilities. He is the founder of Sun breathing technique and the first one to be born with a demon slayer mark.