Clans are a funny thing. Here are clans already made.
Uchiha Clan, Lead by: Zero, Members: Jake, Hiei, Matthew Uchiha, Sasuke, Uchiha Itachi, Uchiha Madara
Uchiha Note: 1 Tomoe Sharingan: Academy Student, 2 Tomoe Sharingan: Genin 3 Tomoe Sharingan: Chuunin Mangekyo Sharingan: At Genin or higher, Kill/Beat a Genin+ Akatsuki or Jinchuuriki in a death match.
Mangekyo Sharingan users: Zero
Hyuuga Clan, Lead By: Hinata Hyuuga, Members: Kira Hyuuga
Nara Clan, Lead By: Senna, Members: Rioken
Kaguya Clan, Lead By: Genocide Hero, Members: Shozen
Aburame Clan, Lead By: No one, first one who comes gets to lead
Inazuka Clan, Lead By: No one, first one who comes gets to lead
Soooo ya.