In , researchers are telling that "If we do not take into account the instrumental transfer function that can be negligible in many cases (...), the total intensity of one phonon mode with a wavevector 𝑞 0 and a frequency 𝜔(𝑞 0 ), in a perfect crystal, is spread on a symmetric profile which is Lorentzian". Merlen et al. are also discussing the presence of asymmetric peaks in the framework of the approach by In the case of investigating the first order region of the Raman spectra of carbonaceous materials, for its fitting procedure, Merlen et al. suggest the use of Lorentzian and Gaussian functions for symmetric profiles and of the Breit-Wigner-Fano (BWF) line shape for asymmetric peaks (in particular they tell for the case of "One band: The G band is fitted by a Lorentzian if symmetric, and by a BWF if not symmetric"). We have discussed the G and G' bands of graphite in ChemRxiv1 and we used q-Gaussians. We used q-Gaussians too for other carbonaceous materials (biochar and nanotubes) in SSRN. The behavior of the peaks we considered is q-Gaussian, that is, not Lorentzian or Gaussian but q-Gaussian. For what is regarding the BWF asymmetric line shape, a discussion is proposed in ChemRxiv, in research about the Raman LO mode band in Silicon Carbide.