>>9574863Probably the standard ones like Mata, Metru, Inika, or all the different types of Matoran. Then you have the custom builds that use a custom torso. At least that's how I divide it.
>>9574912For me, Metru build is using the Metru torso and general proportions of the Toa Metru in the sense that they can't scratch their knees while standing upright like the Inika can. As long as that's given, you can customise it as much as you want, I'm still gonna call it a Metru build.