Three examples of mETGs with extended radio emission, representative of the main morphological classes: cospatial radio and optical emission (left), jetted source(center), diffuse radio source (right). The LOFAR images at 150 MHz are superposed to the optical images from Pan-STARRS. The lowest contours are drawn at three times the local rms (see Table A.1). Images of all 31 extended sources are shown in the Appendix B.