susStringly typed
Ah, the SQLite approach!
It is also the bash approach, isn’t it?!
AllNewTypeFaceAlso, Tcl (a cute little scripting language from the 90s, best known for giving the world the Tk UI toolkit; it was somewhat Lispy, only under the hood, worked like sh, where everything was a string).
Does GNU make count? It’s crazy what you can do with the macro expressions, basically a Functional language using only string types. There’s even a math “library” that will do arithmetic with numbers in strings.