I am looking for advice on motherboard grading. What indicators am I looking for to determine if they are high-grade or low-grade?

I found a few places saying that if a board is "busy," it is high-grade.

Below are some pictures of boards that I recently pulled out of a box. Board 1 and 2 I would consider "busy" therefore high-grade. 3,4, and 5 are not as busy so I would consider them low-grade. I just want to know if I am on the right track and any advice/tips/resources to help me out.

Thank you.



EDIT: I guess I am not allowed to post links so I can't post the actual pictures. The imgur album is: imgur[dot]com/a/KpFbA