A truly "less is more" system?

Hi people, my question is: what can you recommend as the system that truly embraces the "less is more" philosophy? I'm talking preferably classless, no skills, no "paper buttons" to press basically, so it promotes creativity instead of limiting it. I liked knave(and knave 2e) but not sure if it's the best for this style. are there other systems or hacks that support diverse character concepts organically without bloated rules? anything rings the bell?