1. Pain. Deva Path alone showed remarkable strength when he alone fought 6 Tailed Naruto, hitting the floor destroying everything around him, even causing the place to flood with water (as he planned). Add 5 more Paths and it's game over for everyone else.
2. Itachi. A 30% clone wrecked 3T Kakashi along with Naruto and Sakura.
3. Kakuzu. Stretching power and superhuman strength which knocked Choji out in an instant and still kept up with 3T Kakashi while dealing with the latter's team.
4. Obito. Possesses the Sharingan and while he got defeated by Kakashi, he has showed decent speed and agility.
5. Hidan. He kept up with a Kakashi clone (albeit had a significant amount of help from Kakuzu's Jutsus and used his scythe which isn't really Taijutsu).
6. Kisame. With Samehada, which while isn't Taijutsu is allowed in this thread, killed dozens of Ninja, and without it, he still showed he had superhuman strength, for he destroyed chakra-absorbing Wood and it can be inferred that he has defeated many people with his bare fists for he is not slow, and as iterated before, is extremely strong.
7. Sasori. Since he has access to his weapons which aren't really Taijutsu for he's featless in this sense, and his puppet-body, he'll hold his own in this battle.
7. Konan. She is featless when it comes to Taijutsu, but has access to her paper shuriken in this battle which give her a little bit of power.
8. Deidara. Featless in Taijutsu, but choked Obito without even using his arms. Jokes aside, he's lamely featless in this sense.
Good thread. I had fun making my own list.