Visualizations of the g 3 distributions and individual lipids show clear differences in intramolecular tail packing (Figure ). The hydrocarbon tails of cluster 0 and 1 lipids are more densely packed, while clusters 2 and 3 display more diffuse peaks at larger radial values, indicating splayed tails. Overall, cluster 1 shows the tightest intramolecular tail packing. The trans/gauche peak ratios tend to be slightly higher for cluster 1 in comparison to cluster 0 and cluster 2, indicating that the cluster 1 lipids are more ordered. The trans/gauche peak ratios are, however, within a similar range for all of these three clusters. The splayed lipids clearly differ in their gauche peaks; cluster 3 lipids have the highest trans/gauche peak ratio and are thus the most ordered lipid type. Distinct tail ACF rot curves (Equation ) and splay angle distributions confirm the proposed classification (Figures S2.9 and S2.10). All four lipid types (Figure ) were found for both MMG-1 and MMG-6 (Figures ). The populations of tightly packed type 1 lipids are larger for MMG-1, whereas MMG-6 displays a higher number of more disordered type 2 lipid structural motifs (Figure ). Interestingly, the number of type 3 lipids is approximately an order of magnitude higher in the interdigitated systems in comparison to the other systems. The differences in lipid population sizes between the MMG molecules are most pronounced for the single-bilayer and interdigitated double-bilayer configurations. To improve the understanding of the tail packing and interactions, we analyzed tail-tail RDFs. Unexpectedly, none of the systems displayed a high order of intermolecular tail packing, and no evident difference was found between MMG-1 and MMG-6 in tail interactions (Figure .11).