Tokyo Revengers

Takemichi Hanagaki is the head of the second generation of Toswa.
Chifuyu Matsuno, Deputy Head, was responsible for strategy and coordination.
Takashi Mitsuya is the captain of the 1st Division.
Hakkai Shiba is the vice captain of the 1st Division.
Haruki Hayashida - Captain (held important positions at various points during the Toswa/Toman restoration).
Nahoya Kawata (Smiley) is the captain of the 4th Division.
Soya Kawata (Evil One or Angry) is Nahoi's second-in-command.
Seishu Inui - played a significant role in the gang's reorganization.
Senju Kawaragi was a member of and held a position in one of the squads (5th squad).

I won't write much here. I'll just write the roles.
Manjiro Sano - head
Sanzu Haruchie - Deputy
Kokonoi Hajime - Advisor
captains:
Kakuche, Ran, Wakasa.
Mochizuki and Hanma were also there.

Izana Kurokawa is the leader. He previously wanted to obtain Toswa, but was foiled by Takemichi's help. He is Maika's half-brother.
Tetta Kisaki is the gang's chief strategist. My search also told me he's the chief of staff. I don't know what that is, so I'll just add it.
Kokonoi Hajime is a financier, or as the search told me, a treasurer. It depends on the voice acting.
Kakuche is the most loyal of all Izane, his right hand.
Ran Haitani and Rindo Haitani are brothers. Rindo is the smaller brother. The Haitani brothers are known as the strongest duo in the Sky Realm.
Shion Madarame, the elite of the skies
Yasuhiro Muto (known in other voice acting as Muche, Mucho), director.
Shuji Hanma is just someone. He's not part of the elite, but he's a powerful fighter in the skies.
Sanzu Haruchie is Maika's half-brother.

Tosva is one of the gangs, its members:
Manjiro Sano is the leader. His second-in-command is Draken, also known as Ken Ryuguji. Mikey calls him Ken-chin.
1st squad:
Keisuke Baji (former captain), Hanagaki Takemichi (captain), Chifuyu (vice captain), Kazutora Hanemiya (former vice captain)
2nd squad:
Takashi Mitsuya (captain), Hakkai Shiba (deputy)
3rd detachment:
Haruki Hayashida (former captain), Tetta Kisaki (former captain), Ryohai Hayashi (acting captain)
4th detachment:
Nahoya "Smiley" Kawata (Captain), Soya "Smily" Kawata (Deputy). Also known in other voice acting as Smiley and Angry.
5th detachment:
Yasuhiro Muto (former captain), also known as Muche; Haruchie Sanzu (former deputy).
6th detachment (disbanded):
Hanma Shuji (former captain).

Bonten is a criminal group in Hanagaki Takemichi's final future. They deal in prostitution and the distribution of substances such as drugs, alcohol, cigarettes, and other items. Their leader is Manjiro Sano, formerly known as the leader of the Tokyo Swastika, the gang where Takemichi himself belonged. Sanzu is number 2. In the past, Mikey, or Manjiro, tore his mouth, which is why he has diamond-shaped scars at the corners of his lips. Kakuche is number 3 in Bonten. He was previously the deputy of Izana Kurokawa, the leader of the Celestial Empire (season 3). His parents died in a car accident as a child, which is how he received the scar running through his eye. Takeomi is the group's advisor; he enjoys smoking and almost always has a cigarette in his hand. The Haitani brothers, or Ran and Rindou, are the leaders of the group. They were both sent to reform schools twice, were the heads of Roppongi, and even held positions of power under the sun. Their duo was considered the strongest. Kokonoi Hajime is the bonten's financier. He's obsessed with money, having previously failed to save Akane, Seishu Inui's (Inupi) sister, from a fire. Mochizuki—I haven't found any information about him. Please share your thoughts in the comments.