Terry Richardson is a fashion and portrait photographer, having worked with Vogue, Vanity Fair, i-D and Vice. His style is basic, mostly using white backdrops and more civillian clothes, the subjects are usually posed looking casual or mundane.
Sarah Dunn is a celebrity portrait photographer, has done work for Vanity Fair, Empire and V Magazine. Her style is having a mostly dull and dark photo, with one or two bold colours popping from the photo, usually either in the subject's costume, facial features or immediate surrondings.
Matt Holyoak is a portrait photographer, working with actors, music artists and fashion models. Holyoak has worked with magazines like Empire, Q, British Vogue and Rolling Stone. His work is mostly either in high contrast black and white or using dark colours and contrast within the darkness.