We will follow the Konohagakure system for now: a 15 man platoon composed of five Gennin squads lead by a single Jonin sensei each." he explained to everyone in the room while you gave an obedient nod.
I think you should add each cause it sounds like a sensei is in charge of 15 genin.
I am leaning to a more balanced team rather than just picking genin that has our specialty mostly for the challenge. The holy trinity of gen, tai, and nin specialty with other utility skills here and there. I'll write what I think on all of them.
[ ] Byako Wakatabi: A clanless boy whom his teachers noted to be "Silent but attentive". His test scores in the written are among the highest in the class and his practical scores in Taijutsu skills are noted to be good even for a Genin. Despite the lack of any Kekkei Genkai, he seems to be right up your alley.
He is a very safe pick since we are sure he's intelligent and is good in taijutsu. So he's up for consideration
[ ] Suijin Hozuki: A young boy from the Hozuki clan, he is noted to be a prodigy when it comes to Ninjutsu and chakra control, allowing him to use several jutsu in a row. However, his skills in other departments have been lacking according to the notes. He seems to be needing a lot of improvement in his skills.
A good Nin specialist but not much else is... fine but taijutsu is needed in average amounts so that you won't be a glass cannon when someone manages to get close enough and punch fast enough for ninjutsu to be impossible. Plus the political baggage makes him a very hard sell.
[ ] Samuke Yuki: One of your first cousins who had just finished the academy. According to the notes, he is pretty average in combat, but was noted to be incredibly interested in the world of espionage. He is the only family member in this class, so it is natural that you would pick him, but you should be bias.
He would be a nepotism pick. We are of the same clan so we are able to teach him clan jutsus along with keeping him safe from the other clans as he could be a potential hostage if we pissed off the wrong clan, which according to QM is where everyone is currently at right now. Espionage isn't our thing but we can teach him what to do if you are spotted and need to fight his way out. Plus the Mist invented Silent Killing so I think we have a good espionage skill to at least get him to chunin level for Mist where he can then train at his own time with other Yuki clan that are also interested in espionage. Plus having someone capable of info gathering is important in any battle, Sun Tzu's knowing your enemy and all that.
[ ] Fuyumi Hinamori: A clanless girl from a merchant family who has been noted to be above average in both Genjutsu and with weapons. However, the notes also say that she is below average in Ninjutsu and Taijutsu, as well as having a kind and bubbly personality.
Genjutsu can open up a lot of options. With the right teammates tai and nin can be covered. Tai can be covered pretty well if she used a weapon. The kind and bubbly personality could be another avenue to trick the enemy into underestimating her or be fooled to trusting her. And as a daughter to a merchant, her background can allow the team to infiltrate as merchants or at least knows the basics to play off as merchants. A very attractive pick.
[ ] Ruruka Doi: A girl from the Doi clan who is noted to be a prodigy and a jack-of-all-traits, but it's also said that she is a spoiled, egotistical, petty, disrespectful brat. While she seems like a pain, putting a halt on her attitude problem would do wonders for her and her team. Plus, embarrassing a Doi is going to be fun.
I am not one to dismiss a prodigy that is good in all 3 disciplines. Giving her an attitude adjustment should be simple enough since I highly doubt she can beat a jonin and hadn't killed anyone yet. She could be the team's powerhouse or missing link to any skills they are currently lacking. Plus trolling her is gonna be funny.
[ ] Izumi Kanon: A clanless girl who is noted to be completely average on all fronts, be it in written or practical exams. The only exception to that being that she has a great amount of charisma and is easy to make friends with. Maybe even that part of her personality could be cultivated into an effective weapon as well?
Hmm, an average genin but is also probably a good info gatherer or protagonist wielding the power of friendship. I don't know about this one but at the moment I am putting her under Genjutsu merchant girl.
[ ] Yoko Kaguya: A boy from the Kaguya clan. The notes all appear to imply that he is skilled but also terrified everyone around him, which isn't surprising. Anyway, he is good about using his Kekkei Genkai with Taijutsu, but is below average in terms of Ninjutsu ad Genjutsu.
Probably too crazy to handle, and good in clan jutsu that we can't improve and below average in everything else. Bottom of the list
[ ] Mei Ubonaga: A clanless girl who was noted to have potential in many fields. while she is very hard to judge simply because her tests results are all over the place, she is noted to be a quick learner. That's a good thing that you want to have in a student.
Not sure about her, we'll need more info on her but it is starting to look like she is a randomly generated character. I'd put her below Bratty Doi girl.
[ ] Aio Chinoike: A boy from the Chinoike clan, he is noted as above average with the Ketsuryugan, but aside from that he is completely average in combat skill. Knowing the kind of cruel personality those people possess is not something you'd like to deal with, but he does have potential and that's what counts.
Again, a different clan with different skills that we are can't help with and average everything else is a neutral pick, but having a personality that would make team building harder puts him in the negative.
[ ] Torukane Kurry: A boy from the Kurry clan. His results in written exams are rather below average, but all of his skills in combat are above average. He definitely has skills and could be nurtured further, but he is also rash and headstrong according to his teachers' notes.
The Naruto of the class. That type won't survive long in Mist, unless he has a Tailed Beast in him... Actually I'd put him right next to Doi brat, if he is a Jinchurikki. If not, then it would be a no go.
[ ] Miyu Hoshigaki: A girl from the Hoshigaki clan who was noted by her teachers to be interested in Bukijutsu, especially in the branch of Bojutsu. You might just be a perfect teacher for her because of your skills, but unfortunately she has allowed her other skills to grow simply to be average. That can be fixed.
For her, being specialised in Bojutsu is the wrong type of weapon for us. Skills you learned with wielding a sword does not transfer well when using a staff, too incompatible. We can improve her other skills but it is looking like it'd be more work than reward. Having an in with the Hoshi clan is a boon but if we do a bad job it would reflect badly on us so might as well not take that risk.
[ ] Ryunosuke Momoka: A clanless boy who is noted to have a "bright and optimistic" personality. He is noted to have a harder time understanding things, but also appears to try and specialize in Kenjutsu. He might be a good fit after all.
Skill wise, this would be the best fit since we are a Kenjutsu specialist. The personality is also a possible morale booster and push the team to keep going. The signs of him limited intelligence is a big drawback so I'd put him with Silent but Attentive Taijutsu boy.
[ ] Shota Koruzumi: A clanless boy who is noted to study a lot of Fuinjutsu on his own and has shown a lot of interest in it. While he is below average in Taijutsu, he is a very interesting prospect.
Fuinjutsu is like coding, you need someone to teach it to him and since he is clanless, he doesn't have the resources to find a teacher. Yuki clan probably have a fuinjutsu specialist we can ask a favor from so this is at the same level as our Yuki Espionage genin as he could bring a lot of utility if we have set up time. Which is a lot judging by when Team 7 fought Zabusa, having the more combat orientated members distract while Shota make seals is a potentially deadly combo.
[ ] Chie Chinoike: The twin sister of Aio Chinoike, she is also a member of Chinoike clan. She is also noted to be more skilled with other skills rather than her own Kekkei Genkai, which is unique.
If we want to piss of the Chinoike we could pick one of the twins and not the other. But I don't think it is worth the trouble.
[ ] Akane Kurry: A boy from the Kurry clan and second cousin of Torukane Kurry, he is noted by his teachers to be a "lazy and laid-back boy with a lot of skill and no interest whatsoever". From those notes he seems like someone who was forced into the academy, but he still has the highest scores in the class in written exams and is a prodigy in Genjutsu
This looks like the class' Shikamaru. Highly intelligent and a proficient Genjutsu makes him a really attractive choice. The downside of lacking motivation can be solved by making shinobi work being worth his attention by making them fun for him to overcome.
Here are a few of the team builds that synergizes well.
[] Balanced Infiltration Team
-Byako Wakata
-Samuke Yuki
-Fuyumi Hinamori
This team has Taijutsu and Genjutsu covered with Yuki clan Ninjutsu should be fairly balanced. Samuke being interested in espionage could be a problem against teams more focused on combat, but the team would be perfect for infiltration missions or assassination missions. Active combat could be a problem in the future but we can fix that with more focused combat training.
[] Fuinjutsu Strategist Team
-Akane Kurry
-Shota Koruzumi
-Ryunosuke Momoka
This is made to take full advantage of fuinjutsu as a replacement for ninjutsu. Shota is the core of the team, Akane is the brains that can take full advantage of fuinjutsu, and Ryuno can be the one to motivate Akane with his personality and be the frontline fighter of the team. With Hidden Mist Jutsu they will have a lot more freedom to do what they want.
[X] Balanced Combat Team
-[X]Ruruka Doi
-[X]Torukane Kurry
-[X]Ryunosuke Momoka
This team plays more to our strengths as a combat Jonin, each member can handle themselves in a fight and training would mostly involve combat. Coincidentally following the Konoha format of a prodigy, deadlast, and team glue comp. Kurry can fill Doi's superiority complex, Doi can be Kurry's motivation to improve, and Ryuno could be the team's glue.
I am currently leaning on Combat Team cause I feel that it would be the most fun to train.