Here are a list of the custom clans made by the users and are available although you still need to pm to get approval by the clan leader of the one you want to join it. Its easier to find here what you are looking for so check it out:
Name: Sudeki Clan
Info: Acid manipulation
Link: Sudeki clanLeader:
SudekiName: Hirameki Clan
Info: The user can change his appearance accordingly to his summonings, becoming even faster, stronger, with his senses even more accurate, etc...
Link: Hirameki clanLeaderHashin HiramekiName: Shunketsu Clan
Info: The members can manipulate a dagger tail in order to attack or defend when they are in combat. These dagger tails were attached to the members as a curse and they can be used to help them getting something...
Link: Shunketsu ClanLeader Solid SnakeName: Gerudo Clan
Info:Masters of the Earth. The Gerudo Clan can manipulate and literally change the earth into multiple different specific forms. In each form they are still manipulated like earth, simply with new qualities for techniques and specific purposes.
Link:Gerudo ClanLeaderWTFlashName: Tatake Clan
Info: God Speed
Link:Tatake clanLeaderIzumoName: Urit Clan
Info:Molecular Reconstruction- With this he can alter himself to any substance he touches. It's like if he was to touch any tress or plant he could mold his body into and become like one of these.
Link:Urit ClanLeaderXyloName: Shikai Clan
Info: They are able to shut off their chakra becoming undetected to chakra sensory jutsus or they can play dead...They have another ability named "spirit enclosure"...
Link:Shikai ClanLeaderHitogoroshiName:The Odolwa Clan
Info: A Fuuinjutsu clan, they have many sealing abilities including the ability to seal many weapons on their person.
Link:The Odolwa ClanOwner:Well, Wtflash, but since he's not here,
Pat