The Final Fantasy commander decks are already mostly sold out
Energy is the name of the game in Science!, and you'll be building a powerhouse to stay ahead of the competition
Not only is the proliferate keyword tied intrinsically to the Phyrexians, first appearing in Scars of Mirridon, there were counters all over the shop in Standard at the time, from sagas, to brand new counter types like stun and shield
And it does give the Transformers the feel of hiding in plain sight as a vehiclethats why they cant block
Notable black/green characters are hard to come by, but they include Lilith, Venom, Bagheera from The Jungle Book , and Poison Ivy from Batman
Of course, heavy use of auras can easily be the build for any of these commanders, and theres some overlap on the lists, but I look toward some broader build options here