Morph seems to be a strong word that rightly or wrongly triggers people if you had asked if there are any different colour phases or locality colours you would of gotten a different response. fyi @Jaxon 2 of the traits you have mentioned arent morphs, hypo and melanistic are generally polygenic (line breeding the 2 most hypo/melanistic animals together to enhance the colour/pigment or lack of
).
Line breeding for darker or lighter colours is not true melanistic or hypo