Violin plot visualising the distribution of halo mass (M_vir) for the sample. The high-Z_cold galaxies are shown on the left, and the low-Z_cold galaxies are on the right. Each violin displays the distribution of filament and knot galaxies. The left side of each violin represents the filament galaxy distribution, while the right side shows the knot galaxy distribution. We have also overlayed box plots in grey, with the median values marked in white. This visual representation confirms the results of our KS test: filament and knot galaxies in the high-Z_cold sub-sample are statistically closer, while filament and knot galaxies in the low-Z_cold exhibit greater differences.