I know that there are no substyles of kendo. Is the same true of naginatado which is in many ways a very similar sport?
There are of course various styles of naginatajutsu:
Tendo Ryu Naginata-jutsu
Jiki-shinkage Ryu Naginata-jutsu
Toda-ha Buko Ryu Naginata-jutsu
Katori Shinto Ryu Naginata-jutsu
Higo Koryu Naginata-jutsu
(This information is from the same site as above.)
There are of course various styles of naginatajutsu:
Tendo Ryu Naginata-jutsu
Jiki-shinkage Ryu Naginata-jutsu
Toda-ha Buko Ryu Naginata-jutsu
Katori Shinto Ryu Naginata-jutsu
Higo Koryu Naginata-jutsu
(This information is from the same site as above.)