Practice of multinational companies, what sort of grading system they are adopting?

Dear Seniors, I am going to implement a new grading system in my organization, here we don’t have any concept of HR I am going to start it gradually kindly help and give your kind suggestion.
Do suggest me the practice of multinational companies, what sort of grading system they are adopting either it is top to bottom (1-15) or (15-1)
24th September 2008 From Pakistan, Lahore

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One reason that most CEOs are comfortable with present job grade systems is that they tend to organize top-down which is easy to adapt.
23rd March 2017 From India, Bengaluru