If you want to generalise (always a dangerous game) find an instructor who flys GA.
By that I mean not someone who instructs, but actually owns or has a share in an aircraft.
I appreciate they are a rare breed, not least because of the cost of owning an aircraft themselves. However, there are more than a few around.
The fact that they actually fly and "love" GA makes a huge difference.
My mate is a full time commercial pilot, owns her own cub and teaches one day a week. 10 years ago she owned her own cub, taught most of the week and was seeking a commercial job.
Our own Bose on here would probably be a good example. Someone who teaches, flys for pleasure and has more than a small interest in GA for GAs sake.