Alola starter theme?

As many of you may know, the final evolutions of a generation's starters tend to have some kind of underlying theme to help tie them together more. I've recently been looking into a few possible themes for the Alola starters:

Theory 1: RPG Classes Continued




This is probably the most common, widespread theory: The Alola starters simply continue the Kalo's starters' theme of RPG classes, which would be fairly self-explanatory given their designs and abilities.

Theory 2: Greek Zodiac



Litten's evo is the most iffy in this one. There wasn't really any other symbol that matched up with it as well, but lions and tigers are both big cats and the symbol also resembles a bomb, which would match up with Litten's subtle bomb motif. The greek zodiac is also of importance when it comes to alchemy.

Disclaimer: at this point, I'm probably reading too much into it. Credit again to Alchemylab.com for the descriptions

"Filtration: A kind of Separation, in which material is passed through a sieve or screen designed to allow only pieces of a certain size to pass through. The operation is represented by the sign for the constellation of Sagittarius, the Archer."
It seems like Rowlet's evo can narrow its hood opening to a certain size to focus on a specific target and filter out distractions

"Putrefaction: The first stage of the Fermentation operation; a digestion in which decomposing essences are reabsorbed. The process was represented by the symbol for the constellation of Leo."
A possible connection may be drawn between this process and whatever putrid green liquid Litten's evo spits out

"Multiplication: A process of Distillation in which the power of transmutation is concentrated; an increase in the amount of the Stone as obtained from its pristine form. It is represented by the sign for the constellation of Aquarius."
The strings of bubbles holding together the hair of Popplio's evo can break apart, "multiplying" in a way

"Distillation: Distillation is the sixth operation in alchemical transformation. Denoted by the symbol for the constellation Virgo. It is essentially a process of concentration, no matter on what level (physical, mental, or spiritual) it occurs."
The word "distillation" immediately makes me think of water. Distilled water is water with its impurities removed, somewhat like Popplio's evo and its apparent emphasis on beauty compared to its previous form

Theory 3: Mind, Body and Heart



This is probably the most reaching of the three theories, but it's one I'm having more and more confidence in the more I think about it, and given the focal points of Litten3 and Rowlet3's designs specifically. Although, it's hard to determine anything for sure since we currently have no official descriptions of their behaviour or personalities. I also feel like the theme of 3 crucial parts being put together to make a being still fits nicely into an alchemy theme


Ok, that's enough pointless ramblings