Over the past few years, researchers have made significant progress in synthesizing high ion-conducting materials for solid-state devices. Despite decades of research, only a limited number of materials demonstrate both high RT conductivity (σ RT > 100 mS cm -1 ) and a low activation energy (E a close to 0.1 eV). In addition to these electrical properties, practical materials must meet other essential criteria, including good chemical, mechanical, and thermal stability and cost-effectiveness . Unfortunately, as of now, no solid-state electrolytes have managed to fulfill all these requirements. Therefore, it becomes crucial to gain a systematic and fundamental understanding along with high-conducting materials synthesis. However, various challenges hinder this understanding due to the intricate interplay of multiple factors. Several design principles have been proposed to achieve fast alkali conductivity, such as 3D interstitial networks with suitable bottlenecks (BN) , alkali ion disorder , and polarizable anion frameworks with body-centered cubic or hexagonal close-packed anion frameworks . These principles are, however, specific to certain chemistries or structure types and cannot be universally applied. Consequently, the search for new frameworks that exhibit these characteristics has proven to be a challenging task.