Как по Английски будет 非典型的

adjective

Not representative of a type, group, or class.

Примеры использования:

A sample of people who are rather atypical of the target audience

adjective

Not having all the characteristics that you would usually expect from a particular group of things or people

Примеры использования:

This is a non-typical problem that requires a novel approach to resolve it., their family set-up wa…