What is atheistic creationism?

Atheistic creationism is the view held by a number of idealist and Buddhist philosophers especially in the 19th century and the early 20th century.

Basically every object and thing in the universe even down to the smallest atom is a mental creation, created out of mind. Minds are indeed the creators of the universe. But unlike George Berkeleys subjective idealism which was theistic for atheistic creationism there is no divine mind, there is no God. All creations were created from human minds or other forms of life.