There are no 750 strains, that's total marketing BS, effect is just batch-dependent.
There are no differentiated phenotypes and red/green/white are initially just different drying methods used in Indonesia (red is dried under the sun, green is dried indoor, white is usually a mix of both or other parts of the leaf like veins). The color of the midvein, which can indeed be red or green, is in no way correlated to alkaloid content.