Tier Lists originated from Japanese fighting game communities to categorize the competitive viability of characters from 'S' (top) to 'F' (bottom). The format evolved from niche gaming forums to mainstream internet culture around 2019, popularized by YouTubers and streamers who began ranking everything from fast food to MCU movies. Today, they serve as a versatile medium for expressing strong opinions and sparking debates within fanbases, characterized by the iconic color-coded rows that signify a definitive hierarchy of quality or preference.