I'm not a metamorphic petrologist, but I would definitely favor gneiss over schist based on the coarseness and arrangement of the crystals and the presence of what appears to be k-spar.
These are rocks, made up of several different minerals: in your specimens you can see quartz (transluscent, colorless to grayish), feldspar (opaque, cream color), and mica (shiny and foliated)
IMO, the rock on the left makes me think of granite (random structure), almost pegmatitic considering the size of grains, while the others look more like gneiss (foliated structure with bands)
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