Loose overview

WU - Fliers, Artifacts

UB - Control, Value

BR - Sacrifice, Goblins

RG - Thiccness, Non-humans

GW - Auras, Go-wide

WB - Lifegain, Attrition

BG - Recycling, Value

GU - Ramp, Counters

UR - Card draw, Spells matter

RW - Agression, Heroic