Quick Knurling Tutorial: Way of getting knurling shape using low-geo and quickly:

It's suggested to use Screw & Array modifiers to keep things non-destructive. So in case you need you can tweak values easily and get a different version of the model.

After extruding and merging vertices you can tweak some stuff by hand.

Of course you do not add the support loops by hand

by KebabEmperor & frankpolygon