• Column (1): Object Name. Column (2): Ratio of the EW of the 6.2 μm PAH to the 11.3 μm PAH. Column (3): Ratio of the EW of the 12.7 μm PAH to the 11.3 μm PAH. Column (4): Silicate strength according to Eq. (6). Column (5): Nuclear optical depth. Column (6): Nuclear fraction. Column (7): Detection of HCN (14 μm) absorption above 5σ in low-res Spitzer spectra. Column (8): Detection of Crystalline silicate absorption from Spoon et al. (2022). Method I selects sources with z < 0.068, s₂₃ < 0 and s₃₃ < 0. Method II selects sources with z < 0.257, s₂₃ < −0.09 and s₃₃ < −0.02. • Sources marked ^* use the innermost aperture from the spectral maps • Values for τ_N and β are only shown for β > 0.4 and τ_N > 2.5 where these values are reliable as discussed in Sect. 3.5. • PAH EW ratios with values lower than the threshold for CON classification are shown in bold. For those from spectral maps marked as ^*, the threshold used is the one adjusted for the aperture correction. Optical depths of τ_N > 3.5 are also shown in bold.