If you are pursuing not just a hastily-decoration purpose, and intend to delve into this area, to try to understand and develop, then I would have to start reading the book Xenia Bohemian "to understand primitive. Amateurs, naive and outsider art in the twentieth century" and wrote to her from names of artists. Sam has long planned to make the glossary, but the hands do not reach: (
The book is for sale here:
http://www.ozon.ru/context/detail/id/1602588/
Reading not very exciting, but as a launch pad for further independent search - priceless.
Try to understand your taste with assault - mess of things. In this direction, and indeed many "matreshechnikov" and simply hopeless amateurs.