The cube plays with 3 color archetypes. The commanders are distributed so that each three color archetype has two three color commanders, and three two color commanders. The goal is to have some narrow and some broad commanders in each bunch.
BANT: Enchantments
ESPER: Blink/Enter the Battlefield Effects
GRIXIS: Graveyard Recursion
JUND: Sacrifice
NAYA: Ramp
ABZAN: Legends
JESKAI: Non-Creature Synergy
MARDU: Voltron
TEMUR: +1/+1 Counters
SULTAI: -1/-1 Counters
Notes: This cube is mostly built from my personal collection, with proxying to a minimum. I'm happy to take criticism on card inclusions or lack of cards. The goal is 480 cards at a 5-Slow (Strix Scale) power
level. It's obviously well below that level now, we're slowly building.