Get all shape nodes which deviates from Maya standard shape naming convention.

bad_shapes.py

import pymel.core as pm
def find_bad_shapes():
    """ Find and select all shapes which has not inherited their names from their parent transform,
    such as transformShape. """
    
    shapes = pm.ls(type="shape")
    output = list()
    
    for shape in shapes:
        if shape.nodeName() != shape.getParent().nodeName()+'Shape':
            output.append(shape)
            
    return output