Hii,i am here to help you according to your query.Non Creamy Layer (OBC- A) are considered to be Less wealthy, less educated class of OBC people.

OBC-B (Creamy layer) is equivalent to the general category. The creamy layer is a term used in Indian politics to refer to the relatively wealthier and better-educated members of the Other Backward Classes (OBCs) who are not eligible for government-sponsored educational and professional benefit programs.