Finishing interior garage walls

I used cheap 7/16 plywood, and painted it white.
It is really nice to place a screw or nail where you want it.
Plus the advantage is just un-screw it if you need to access wiring.
Hint, run the sheets length wise to the gagage floor, and all your wiring in the upper half, it makes it so much easier to change, add a circut etc.

FYI osb is cheaper but it will absorb 2x-3x the amount of paint vs smooth plywood, so you just lost any cost advantage, plus the osb draws moisture faster.