The hair especially is often clumped together with minimal hints of details (like strands, knots, etc.). It’s often described as “clay” or “clayified” due to how chunky and round-edged it looks.
Maxis Match, on the other hand, blends in with the default texture of The Sims 4. Alpha CC is often described as “photoskinned” texture, and using it often results in a Sim or object that looks hyper-realistic or graphically generated. Custom content for the Sims 4 generally falls under two styles: Maxis Match and Alpha CC.