LesserVariation

The Lesser Variation mobs include:

Zombie Brute

Rat

Grillo

Sharpshooting Skeleton

Shambler

Sprinting Zombie

The Lesser Variation Mobs are low health mobs that usually drop items needed to survive in this world.

Nether Lesser Variants
The nether has their own variant of lesser variants, which are stronger than average variation, but weaker than greater variants. The nether Lesser variants are closer to greater variants, however, in terms of power.

Pig Zombie Brute