a) N. Ampullaria ~ Green Speckle variety. True to what Fauzi has mentioned when I bought this version, the more sunlight, the redder the pitcher become. The truth is, I am quite sure that I have forgotten what the exact name for this variety.
b) N. Ampullaria ~ Hot Lips.
c) N. Hookeriana. Thus far the one most fulfilling in terms of expectation. The pitchers are getting bigger.
d) N. Bicalcarata. Curiously has some light red on its pitcher.