[farbour]

Most industrial isn't really even metal. Some bands just use metal guitar riffs to add a more menacing tone to their music(Ministry, Nitzer ebb and Front Line Assemby for example)
And, while all grind groups can be considered noise, not all noise groups can be considered grind.
(Zeni Geva could be considered grind; but you couldn't with good conscience call Pachinko grind)

and you forgot
stoner Rock:see also doom