Best-fit SEDs for some of the dusty sources discussed in this work derived with HYPERION. Due to the low spectral coverage because of the bright radio/submillimeter counterpart of Sgr A*, the analysis is limited to the NIR and MIR domain. We motivate the analysis with the color–color diagram shown in Fig. 8 and find a satisfying representation of the flux density distribution using a Class I model. The only exception is the data point distribution for D9, which is hardly represented by the presented fit (see text for further details).