Please make this clear for me i know for a fact that there are only 3 schools called ninjutsu or ninpo in the Bujinkan Do you mean Fighting Arts that they used? such as Gyyko Ryu ect... because those were samurai arts not ninja schools
Okay, I shall post the conclusions I have come to talking with various people extensively about the topic over the past couple of weeks.
To the best of my knowledge, there are FOUR ryuha within the Bujinkan that contain ninjutsu/shinobijutsu teachings: Togakure-ryu, Kumogakure-ryu, Gyokushin-ryu, and Kukishin-ryu. Kukishin-ryu is NOT officially considered a ninjutsu ryuha, however, because it does not emphasize or stress the arts of stealth (whereas the other three do). Its emphasis is on happo bikenjutsu.
To the best of my knowledge, there are SIX ryuha within the Bujinkan that are underlined by Ninpo/Shinobu-Ho (the life philosophy or Way of the ninja): Togakure-ryu, Kumogakure-ryu, Gyokushin-ryu, Kukishin-ryu, Gyokko-ryu, and Koto-ryu.
To the best of my knowledge, there are TWO ryuha within the Bujinkan that contain neither ninjutsu teachings nor are underlined by Ninpo thought per se, but are very sympathetic to Ninpo and are 'Ninpo-like' in nature: Gikan-ryu and Shinden Fudo-ryu.
To the best of my knowledge, there are EIGHT ryuha which are historically and culturally associated with the ninja/Iga-bushi (meaning they were formed as part of the Iga-ryu ninjutsu collective): Togakure-ryu, Gyokushin-ryu, Kumogakure-ryu, Kukishin-ryu, Shinden Fudo-ryu, Gyokko-ryu, Koto-ryu, and Gikan-ryu.
To the best of my knowledge, there is ONE ryuha which is strictly what you might call a 'samurai tradition' (with minimal or no 'ninja' influence) within the Bujinkan: Takagi Yoshin-ryu.
On a side note, the Shinden Fudo-ryu tradition I am referring to is Shinden Fudo-ryu dakentaijutsu (of which Masaaki Hatsumi is soke) and not Shinden Fudo-ryu taijutsu. Shinden Fudo-ryu dakentaijutsu is the only one of the two to my knowledge which contains the 'ninja content'. The Kukishin-ryu tradition I am referring to is Kuki Shinden or Kukishin-ryu happo bikenjutsu, and not one of the other Kuki ryuha. Kukishin-ryu happo bikenjutsu is the only Kuki school to my knowledge which contains the 'ninja content'.
I do not think it is fair to call any of the Bujinkan ryuha 'samurai schools' in that they are, on the whole, diametrically opposed to bushido (but not budo) thinking (with the possible exception of Takagi Yoshin-ryu).