hammer-on & pull-off: slur, notation is a curved line, sometimes dashed connecting notes.
slide: notated as legato, glissando, portamento, all different, in subtle ways, to "slide"
harmonic: notated in classical guitar with a diamond-shaped head.
percussive is tambor
bend: notated using an angled line between the noteheads at the start and end.
All those tab notations are borrowed from traditional notation. And yes, there are classical guitar pieces that use all these techniques. see e.g. https://www.youtube.com/watch?v=Pbc2yDvt8RM
hammer-on & pull-off: slur, notation is a curved line, sometimes dashed connecting notes.
slide: notated as legato, glissando, portamento, all different, in subtle ways, to "slide"
harmonic: notated in classical guitar with a diamond-shaped head.
percussive is tambor
bend: notated using an angled line between the noteheads at the start and end.
All those tab notations are borrowed from traditional notation. And yes, there are classical guitar pieces that use all these techniques. see e.g. https://www.youtube.com/watch?v=Pbc2yDvt8RM