If there was a non-autotune top 20 what would it be

Quickly went through the BBC (30 sec) top 40 & at least 30 of the songs use this form of vocal processing.If somebody manages to find enough tracks to fill that 20 places out of the Official Chart companies top 100 how many places would you have to go down to fill that top 20.I think you'd have to go down quite a way.Any one like to have a go doing it ???? (A slight vocal enhancement would be allowed - but not obvious autotune).

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