What types of products are labeled as ancient grains by food companies?

The type of product which is labeled as ancient grain by food companies is Freekeh.

Freekeh is termed as a cereal food which is made from green durum wheat. It is being rubbed and roasted to create flavor. Freekeh is an ancient dish which is derived from North Africa cuisines and Levantine.
It is being harvested when grains are yellow and seeds are soft. It is sun-dried and piled. Some of the other ancient grains include wild rice, kaniwa, quinoa, and buckwheat.