When Leon absorbs a Template He takes in the special bloodline, combat experiences, and skill knowledge. Receiving all their Jutsu's and their experience with them, he doesn't receive any of their personality traits or their common knowledge.
In essence, the Naruto Template Does not grant Leon the Nine-Tails, meaning he does not have a Bijuu. Though he is granted the chakra from one of its tails, as a chakra generator. The same chakra that Naruto Received when he was genin.
Naruto in the story is going to be the one character that has the most Templates and Leon can't skip any of the stages. Starting from Naruto genin (one tail) Rank C, Naruto Shippuden chunin (four tails) Rank B, Naruto sage mode (Seven tails) Rank A, Naruto chakra cloak (Nine tails Imperfect jinchuriki) Rank S, Naruto Kurama mod (Perfect jinchuriki) Rank EX, Naruto Sage of Six Paths Rank EX.