Traditional photography people look into camera with poses. Wedding Photography is generally filled with non orchestrated photo shoot. The photographer has to be alert and shoot the events. Orchestrated and pre planned photo sessions are known as Traditional Photography.
In wedding mostly people are surrounded by their favorite friends and relatives which sparkles a smile. The photographers will capturing this scene without altering. Natural expressions are better for good photography.
Artistic Photography is the production of images to fulfill the creative vision of a photographer. Photography is an Art and the the Photographers are artists. First they perceive it with their artistic eye. Then they click a photo.
Lifestyle photography style approach document everyday activity of couple. Meeting in coffee shop, sitting in drawing room etc. are few example.
Usually involving artistic lighting, artificial backgrounds, using props etc. to create a cinematic like scene.