Japanese sword(Nihonto) are made in a variety style shapes. Shinogi zukuri are the most common one of them.
The most general style for TACHI/KATANA and WAKIZASHI (long swords)
It is like SHINOGI-ZUKURI, but without YOKOTE line
The most general style for TANTO
Usually in the case of the blades without curvature, like Chinese TANG DAO.
thickness on the back becomes thins as it gets closer towards the
tip, (from 1/3 for katana, from half for Tanto).
Like Unokubi-Zukuri, but no yokote.
style blade, commonly called "Kogarasu-maru" style. The thick
back becomes double edge towards the tip, a light fast sword.
A double edged blade, for tanto