The structural versatility of polyheterocyclic macrocycles is vast; with SCSD, we can start to understand the conformational variance across and between distinct examples within the class. Porphyrin molecules were scrutinized across the chemical literature in our previous paper using the normal-coordinate structural decomposition method (NSD) with a focus on how the properties of the macrocyclic chelate may be modified by chemical alteration. This program is available at www.sengegroup.eu/nsd for user samples. Krumsieck and Bröring expanded this methodology to a selection of common pyrrolic macrocycles (corrole, norcorrole, porphycene, corrphycene) which are available to be analyzed through PorphyStruct. New porphyrin-related compounds are being identified constantly, and a method to analyze the conformation of novel examples is useful. The NSD method demonstrated to us the interplay between macrocycle conformation and coordination environment is a critical factor in designing the shape of chelates and catalysts, and their resultant chemical function. Expanding the scope to greater numbers of related materials can hopefully translate these principles to a broader class of materials.