Is Khawla a rare name?

Khawla is uncommon but not extremely rare.

Khawla

خولة

Graceful gazelle

Sahabi/SahabiyyahUncommon

Graceful gazelle

This name is of Arabic origin. It was borne by companions of the Prophet ﷺ.

Try Khawla with your family name

Khawla son/daughter of [father's name]