First of the ones we know: Deidara - One-Tail; Obito/Sasori - Three-Tails; Kisame - Four-Tails; Nagato - Six-Tails.
The ones left are: Two-Tails, Five-Tails, Seven-Tails, Eight-Tails & Nine-Tails
We know Hidan & Kakuzu clashed against the Two-Tails. And in my opinion it was Hidans Tailed Beast, he prayed for forgiveness because of not killing his opponent.
Hidan - Two-Tails
Which leaves Kakuzu - Seven-Tails
Taka was responsible for the Eight-Tails because of killing Itachi, so...
Itachi - Eight-Tails
Nagato captured the Six-Tails which makes = Konan - Nine-Tails
The only one left is Five-Tails and the remaining Akatsuki Member are Orochimaru & Zertsu.
Because of Zetsu not being a front-fighter makes Orochimaru = Five-Tails.