The phrase "wrong sort" means something or someone that is not the right or appropriate type or kind for a particular situation or purpose. Full definition
Forget for the moment arguments around the proceeds of growth and the right / wrong sort of growth. (totalpolitics.com)
These sorts of shrill proclamations aren't thought out, and here is a nice example of just how wrong that sort of generalization can be. (realclimate.org)
It dawned on me that I had been digging for the wrong sort of thing. (firstthings.com)