In this work and previous works, candidates have tended to be grouped based on their structure. Among the electrides we identified, there are many electrides with same prototype structure and consistent fourmula, such as Sr 3 IrN 3 , Sr 3 OsN 3 , Sr 3 RuN 3 ,and 𝐵𝑎OsN 3 ; 𝐶𝑎 2 𝑁, 𝑆𝑟 2 𝑁, and 𝐵𝑎 2 𝑁; 𝐵𝑎𝐶𝑟𝑆𝑖 4 𝑂 10 , 𝐵𝑎𝐹𝑒𝑆𝑖 4 𝑂 10 and 𝑆𝑟𝐶𝑟𝑆𝑖 4 𝑂 10 etc. which indicates that chemical substitution from confirmed electrides is a good way to design new electrides. However, we note that electride behaviour is not solely defined by structure. For instance, 𝐼𝑛𝐶𝑢𝑇𝑒 2 , 𝐿𝑎 2 𝐶𝑒𝑇𝑒 2 , 𝑁𝑎𝐿𝑎 8 𝑆𝑒 12 and 𝑆𝑚 2 𝐸𝑢𝑆 4 are four candidates that have the identical structure with space group I-42d (No. 122), as show in Figure , but have completely different electron distributions. 𝐼𝑛𝐶𝑢𝑇𝑒 2 and 𝑁𝑎𝐿𝑎 8 𝑆𝑒 12 exhibit discrete distributions but for 𝐼𝑛𝐶𝑢𝑇𝑒 2 and 𝑆𝑚 2 𝐸𝑢𝑆 4 , it can be seen that the electrons are located on the channel in the a direction of the crystal structure.