The variety list below is adapted from WCSP as of February 2018.

Haworthia cymbiformis var.
angustata Poelln.

Haworthia cymbiformis var.
cymbiformis (autonym)
Haworthia cymbiformis var.
incurvula  (Poelln.)
M.B.Bayer
Haworthia cymbiformis var.
obtusa  (Haw.)
Baker
Haworthia cymbiformis var.
ramosa  (G.G.Sm.)
M.B.Bayer 
Haworthia cymbiformis var.
setulifera  (Poelln.)
M.B.Bayer
The variety list below is adapted from WCSP as of February 2018.
Haworthia cymbiformis var. angustata Poelln.
Haworthia cymbiformis var. cymbiformis (autonym)
Haworthia cymbiformis var. incurvula  (Poelln.) M.B.Bayer
Haworthia cymbiformis var. obtusa  (Haw.) Baker
Haworthia cymbiformis var. ramosa  (G.G.Sm.) M.B.Bayer 
Haworthia cymbiformis var. setulifera  (Poelln.) M.B.Bayer
Haworthia cymbiformis