Top: summary of the longitudinal and transversal profile analysis. R-type profiles exhibit asymmetric longitudinal profiles and symmetric transversal profiles, whereas T-type profiles are characterized by generally flatter longitudinal profiles and asymmetric transversal profiles. These pronounced distinctions between the two filament types imply the existence of two separate mass assembly mechanisms. Bottom: a schematic representation of the proposed formation scenario. Variations in the initial gas distribution following the formation of massive stars may account for the emergence of the two filament types. T-type filaments could arise from a shell fragmentation process, while R-type filaments may result from the stretching and compression of denser gas in proximity to newly formed massive stars.