Observation Haki
Elementary (starting)
Student (start learning)
Teacher (learned bacis)
Master ( could use in fighting)
Grandmaster ( master basics and learned advence)
Lord (master advence and learned master's )
Saints ( master master's techniques)
Grand saint's ( can see in future)
God ( can see everything like emotion, in future, spirits, illusions, insights)
Arnement haki
Elementary (starting)
Student (start learning)
Teacher (learned bacis)
Master ( could use in fighting)
Grandmaster ( master basics and learned advence)
Lord (master advence and learned master's )
Saints ( master master's techniques)
Grand saint's ( can make full body cover)
God ( can make make cover anything with black and red colour haki)
Conquerer haki
Elementary (starting)
Student (start learning)
Teacher (learned bacis)
Master ( could use in fighting)
Grandmaster ( master basics and learned advence)
Lord (master advence and learned master's )
Saints ( master master's techniques)
Grand saint's ( can make SSS lose conscious)
God ( can make EX {low} lose conscious )