Personally, I just wash my face in the morning with water and use sunscreen for my lips, face and neck. At night I use a cleanser. I haven't used an exfoliator for years.
No routine/water only
Cleanser (1x daily)
Cleanser (2x daily)
Cleanser + moisturize (1-2x daily)
Full routine: cleanser + moisturize + extras like serums/SPF/exfoliant (1-2x daily)