Common other concerns may be improper grounding of circuits, reverse polarity of fixtures and devices, improper grounding of multi-wide homes, oversize cutouts or devices, smoke detectors not properly installed, improper layout of required circuits, etc.
There can be many concerns regarding electrical installations outside the manufacturing of the home.
This photo depicts an on-site "illegal" wiring of the air-conditioning unit into the furnace. Note the unprotected wiring running through the floor cutout and "pinched" under the metal cover to the lower right of the photo. Other concerns are also noted, but not enough space to detail here.