Here is the list of the Yami League Members
Disclaimer: I do not own the anime in the list below. I do not in any way, profit from the story and that all creative rights to the characters belong to their original creators.
Gi Ayuru a.k.a. Nakago from Fushigi Yuugi
Ruo Chuin a.k.a. Tomo from Fushigi Yuugi
Bu Shunkaku a.k.a. Suboshi from Fushigi Yuugi
Bu Koutoku a.k.a. Amiboshi from Fushigi Yuugi
Haku Kaen a.k.a. Soi from Fushigi Yuugi
Ashitare from FY
Miboshi from Fushigi Yuugi
Hakei from Fushigi Yuugi GK
(subordinates)
Shigi from Fushigi Yuugi GK
Hien from Fushigi Yuugi GK
Haku from Naruto
Zabuza from Naruto
Itachi Uchiha from Naruto
Kisame Hoshigaki from Naruto
Pein (Believed to be Akatsuki Leader) from Naruto
Unknown member from Naruto
Deidara from Naruto
Sasori from Naruto
Tobi (Akatsuki leader) from Naruto
Zetsu from Naruto
Hidan from Naruto
Kakuzu from Naruto
(subordinates ninja's like Yura)
Orochimaru from Naruto
(subordinates ninja's like Sound Ninja's like Jirobo, Kidomaru, Sakon and Ukon, Tayuya, Kimimaro Kaguya, Dosu Kinuta, Kin Tsuchi, Zaku Abumi)
Kabuto Yakushi from Naruto
Cell from DBZ
Frieza from Dragon Ball Z
Majin Buu from DBZ
Shishio Makoto from Rurouni Kenshin
Hao Asakura from Shaman King
Sōsuke Aizen from Bleach
Kaname Tōsen from Bleach
Gin Ichimaru from Bleach
(Subordinates also has some control over Hollow's and Menos)
Noitora an arrancar from Bleach
(unnamed) an arrancar from Bleach
Grimmjow an arrancar from Bleach
Aaroniero an arrancar from Bleach
Halibel an arrancar from Bleach
Yammy an arrancar from Bleach
Stark an arrancar from Bleach
Ulquiorra an arrancar from Bleach
Szayel Aporro an arrancar from Bleach
(unnamed) an arrancar from Bleach
Suzaku from Yu Yu Hakusho
Captain Kuro from One Piece
Jango from One Piece
Marshall D. Teach (Blackbeard) from One Piece
Buggy from One Piece
Don Kreig from One Piece
Alvida from One Piece
Sir Crocodile from One Piece
Hisoka from Hunter x Hunter
Kuroro Lucifer, also known as Chrollo Lucilfer from Hunter x Hunter
Feitan from Hunter x Hunter
Bonorenofu from Hunter x Hunter
Franklin from Hunter x Hunter
Korutopi from Hunter x Hunter
Machi from Hunter x Hunter
Nobunaga Hazama from Hunter x Hunter
Shalnark from Hunter x Hunter
Shizuku from Hunter x Hunter
Phinx from Hunter x Hunter
Pakunoda from Hunter x Hunter
Ubogin from Hunter x Hunter
Sailor Galaxia from Sailor Moon
Queen Nehellenia from Sailor Moon
Naraku from Inu-Yasha
(Subordinates tons of Demons)
Kagura from Inu-Yasha
Kanna from Inu-Yasha
Akago from Inu-Yasha
Hakudōshi from IY
Earl of Millennium from D. Gray-man
(Subordinates tons of demons and Relo)
Jasdebi from D. Gray-man
Debitto from D. Gray-man
Road Kamelot from D. Gray-man
Skin Bolic from D. Gray-man
Tyki Mikk from D. Gray-man
Lulubell from D. Gray-man
Dilandau from Escaflowne
Folken Lacour de Fanel from Escaflowne
Here is the list. If you want anymore information. I advise you to visit wikipedia. It will give you a far better idea to who these people are they I ever could. The next chapter will be up soon.