Sleaze. Fine word.
Sleaze metal & sleaze rock apparently exist, although they don’t have their own Wikipedia entry – in english. (Does something exist if it doesn’t have an Wikipedia entry?)
So, for all the literate sleazers, sleazists & sleazees out there: You go and make one! Printo pronto!
Something not very metal, but still metal: HEAVY LEATHER. The most judaspriesty song title they never used.