I'll break it down in numbers that are at least reasonably accurate with regard to my own experience viewing coins dated 2004-2007:
minor doubled columns : 1 in 20
major doubled columns or doubled statues : 1 in 500
minor wavy steps: 1 in 200
major wavy steps: 1 in 2,000
minor LIBERTY DDOs: 1 in 500
major LIBERTY DDOs: 1 IN 10,000