Well it depends on how your ranking them....if your ranking them one vs one. Then here's my list.
Naruto (Naruto I feel is still stronger at Sasuke at this point, Sasuke may however get some lame ass Uchiha ability, that he barely worked for again.)
Sasuke (Sasuke is only second Naruto, not much to say, he's a Uchiha)
Shikamaru (Shikamaru is tough to place, hes a great team leader, but if this is one on one, I feel he should be lower but I'll give him the benefit since he showed his solo skill vs Hidan.)
Neji (The best of Hyuga, it was hard to decide between Neji and Sakura since both user Taijustu, and gentle fist is kinda useless against a healer, since I'd assume gentle fist can be healed, and Sakura poison makes her deadly vs close range.)
Sakura (Everyone's a sakura hater, but she's a top notch healer, super strength, deadly poisons, and if nobody notices it she's highly intelligent, if shikamaru isn't present she's usually discerning the enemies abilities, people hate her because of the stuff she's done, but doesn't excuse the fact she's an excellent kunochi, and she's going to surpass Tsunade its obvious, and Tsunade's a kage)
Rock Lee (Lee and Sakura are on the same level sort of, different situations would push one or the other to victory. Sakura gets any kind of attack off, poison cloud, smoke bombs, a scratch from kuni, Lee sorta done for, Sakura just is too deadly at close range. But if Lee is smart, (which he isn't when compared to others) he'll strike Sakura at the right time and win, but Lee's greatest weakness still is only taijutsu, I mean Guy we've seen at least knows how to summon)
Shino (Honestly Shino is a beast in my eyes one of my favorites, but I had to keep him low because we haven't seen much from him in the manga, so its unfair to rank him high on speculation since we don't much about his battle strategies.
Ino (Ino strength shines when grouped with others, she makes any squad shine, but one on one I don't she has the snuff, one on two, we've seen she's good, but one on one, her abilities rely on her not to miss.)
Kiba (Kiba is wild, but his taijustu is subpar when compared to the other, I like him but just like Shino we haven't seen his true strength or we have and i'm not impressed)
Hinata (Sorry Hinata lovers, I don't care if your distracted by her big chest or cute shyness, but Hinata is no solo shinobi, people got to get out of their heads because she's a Hyuga she's good but its the opposite. She's makes a great scout though which I think is her strength but we've seen from every battle she's in, she can't cut it solo, She needs to be on squad, Have Neji cover her back, or Naruto to watch her (even though I'd advise against that cause she almost gets herself killed every time)
Choji (Not much can be said, he's a team style ninja, he's a awesome squad member, but I still think he won't cut it solo)
Tenten (Sorry a shinobi that just uses weapons, how many times have we seen the alliance throw thousand of weapons at the enemies and haven't actually work, yah its not going to work for Tenten)