It's hard to describe it to a connoisseur of femdom (I don't know the usual terminology), but I will try:
Imagine two people (male/female) and one of them, who never experimented with domination, discovers s/he has some power over the other and starts experimenting with what can s/he "ask for", what can s/he "force" upon the other, and what s/he enjoys doing and forcing the other to do. All of this is based on that flimsy discovered power that can disappear at any moment, so s/he doesn't want to "alienate" the other too much, because if that power disappears, s/he doesn't want to lose the relationship.
Jamaal writes about Series XY-A, XY-B, and XX-1. XY means male and XX female. Series A consists of three, Series B consists of five, and Series 1 of five (six in the unpatched game, but only three survived).
There are more male series, since Eric is Series XY-E (in-game Amanda talks about Series E, because the XX/XY is not used when it's obvious), and Grant, Gavin, Gideon, and Gerard are Series XY-G (the stupid ones). We don't know yet how many people are in each series after B and 1.
The groups are limited because it's a company with limited resources, no planetary facilities like in Star Wars, so they increase the number of clones they can create in every series depending on their income. The different series are based on different genetics because the company(ies) is still trying to get the perfect clone.
Great correction! Look above about the batches.
Exactly this with a little correction. Series B clones aren't in the will.