"Sunflower" — Post Malone & Swae Lee

Over 3.5 billion streams. Written for Spider-Man: Into the Spider-Verse (2018), it became one of the longest-charting songs in Hot 100 history at 52 weeks. The relaxed, genre-blending production made it a universal playlist staple — it works in workout playlists, study sessions, and dinner parties equally. Source: Spotify Charts.