Light obsessed photographers. Usually I find they haven't quite figured out how to do great colour work yet.
Ones who will trap themselves to a time of day/night because it's good light. I have friends who will only shoot the same images all the time at night in the rain, which is fine if you have a style that you're confident with, but they feel genuinely incapable of branching out to daylight or even diversifying to dawn/dusk because they make banger sad rain cyberpunk photos and that's all they know. If they aren't in Asia, they're photographing Chinatown only, because of the cool signs.
Ones who will never graduate and learn to see colour in compositions so they're either sticking to safe black and white, or some kind of light that naturally bleaches or dulls most colour like golden hour. It does look nice done right, no doubt. However, having every photo in basically a muted pseudo sepia or black and white seems like wasted potential just to avoid working a scene to compose for colour also. I find it so rare that colour is even a relevant addition in most colour photography I see. Often people will crank up the white balance well over 5000k for daylight to get a muddy brown "golden hour" effect all day and basically ignore it rather than try to do anything interesting with it.
Fujixweekly is the Bible for people trying to do that trend.