The "regular quote" looks like an editorial component: You can add the image of the person (must be a transparent png)
The "Full image" placed the image in the background, so the text is on top of it. To use this version, you must use a dark image, so the white text is still readable.
The "overlayed image" behaves in the same way as the "full image", but it adds an overlay to the image, to make sure the white text is readable. The color over this overlay is different for each brand (Tijd, Echo, Sabato, Partner content)