These are images that combine one or more photographic elements with textures, drawings, lettering & other decorations.
These images begin as photographs and are rendered as another visual medium, such as oil, pastels, watercolors, charcoal, pencils, ink, etc.
These are photographs where the different hues are converted to a shade of a single color, such as gray (traditional black and whites), blue, red, yellow, etc. There may be other techniques applied to reproduce an earlier film process.