Some people specialize in one type of fighting style. Shikamaru Nara, one of my colleagues here, uses shadows to bind and then sew his opponent. Or slice him with his shadows. I specialize in weaponry and summoning weapons from scrolls to rain down on my opponents. I could have taken up elemental ninjutsu, but I decided to stick to various weapons, because Guy-sensei noticed I had talents with space-time ninjutsu. However, sometimes there are people that utilize multiple types of elemental attacks or styles, but that's considerably rare. Even then, fighting styles and how people use these attacks are mostly limited to one person, which is odd if you think about it. People are able to learn whatever techniques they wish, those most are closely guided secrets by clans. If you learn it, you can, in theory use it. The only time this won't apply is with kenkei genkai, techniques which are inherited through genetics.

You know, with the battledome, I might be able to recreate opponents I've faced for us to spectate.