People who pull strings to get ranks? (5)
I believe the answer is:
tiers
'ranks?' is the definition.
(tier is a kind of rank)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for tiers that I've seen before include "Layers, strata" , "Layers or thicknesses" , "Row upon row" , "aprons for kids" , "drawers?" .)