One of the popular ones is probably Kushina, Naruto's mother. Since she was a jinchuuriki herself, she often appears in these fanfictions in the harem. Another could be Fu from Takigakure.
One interesting plot could be the female jinchuuriki having to team up with Naruto to protect their village from a powerful new threat. As they work together, feelings start to develop among them in the harem setting.
In this fanfiction, Naruto Jinchuuriki might have god - like powers such as extreme strength. They could potentially have the ability to control nature on a large scale, like summoning massive storms or earthquakes. Their physical endurance might be enhanced to the point where they can withstand attacks that would normally be fatal.
In Naruto, the Jinchuuriki were often treated poorly. In fanfiction, this neglect can be explored in many ways. One common approach is to focus on the emotional and psychological impact on the Jinchuuriki. For example, they might feel isolated from the rest of the village due to the fear and prejudice associated with the tailed beasts within them. This can lead to some really interesting character development stories in fanfiction.
Yes, there are likely fanfictions out there with this concept. The idea of Naruto being the host of the Sanbi (Three - Tails) is an interesting twist on the original Naruto storyline. Fanfiction writers often like to play around with different 'what - if' scenarios, and this is one such scenario that can lead to new adventures, different power developments, and altered relationships within the Naruto universe.
The other Jinchuurikis could be potential allies. They understand the struggles and the power that comes with having a tailed beast inside them. For example, Killer Bee, who has a good relationship with his tailed beast, could share his insights on how to better co - exist with Shukaku. Tsunade might also be an ally, as she is a powerful Hokage who could offer protection and resources to the Jinchuuriki.
One common theme is the exploration of alternative relationships. Since Sasuke is made female in these fanfictions, it changes the dynamic between Naruto and Sasuke completely. Another theme is the management of the harem. How Naruto deals with multiple relationships at once is often a big part of the story.
Sakura is often included. In the original Naruto series, she has a long - standing relationship with Naruto, so it's easy to incorporate her into a harem scenario. Hinata is another likely candidate. Her shy love for Naruto in the official story can be expanded upon in the fanfiction, making her a part of the harem. Then there are often original female characters created by the fanfic authors. These could be ninja from other villages with special abilities and unique personalities who are drawn to Naruto.
The 'naruto jinchuuriki organization fanfiction' could be about the adventures of the jinchuuriki as a group. They might go on missions together, fight against common enemies like the Akatsuki in new and different ways. Maybe they form a special bond that helps them overcome challenges that a single jinchuuriki couldn't face alone.
I'm not sure specifically as there could be many different plots in such a fanfiction. Generally, it might involve the Naruto character who is a Jinchuuriki (a host of a tailed beast) having some sort of connection or interaction with the Shinigami (the god of death in some contexts). It could be about how his Jinchuuriki powers are affected by this connection, or perhaps adventures that come from it.