BPT diagrams from the measured flux of narrow emission lines. The color bar indicates the black hole mass on a logarithmic scale. The black triangles represent the objects with no mass estimation. In the top left corner, the black lines represent the mean errors. There are four objects classified as Seyfert (LINER) in all three BPT diagrams with no mass estimation (green diamonds). For these objects the WHAN classification is presented in Table 6. Furthermore, the object represented as a green square has an X-ray counterpart in the eRASSv1.1 catalog.