Representative examples of the classification of the pipeline outlined in Fig. 1 for steps 3 (WISEA J063233+655809), 5 (WISEA J105052+000134), and 10 (WISEA J144620+371159) from left to right detailed in Sect. 2.3, which impact the completeness (see Sect. 4). The last panel shows one example of a dust echo-like flare (WISEA J083416-054249). The flux density in the W1 band is shown against time. The classification is annotated in the upper left corner.