It's surprising how often these follow a rigid hierarchy, almost like authors are working off the same checklist. White wings equal healing, light magic, some vague 'divine protection,' and of course flight. Black wings mean fire, shadows, corruption, maybe teleportation through darkness. The more unique takes are in the grey areas—wings molting or changing color with moral alignment, or the physical toll of using them. A novel I read had an angel's feathers burn out if they lied, leaving painful, scarred patches. That kind of tactile consequence is more gripping than another character just hovering because they have wings.
Lately, I've seen a blend with other systems, like LitRPG where wings are a skill with a mana cost, or in progression fantasy where unlocking a new 'feather tier' is a power-up milestone. The wings themselves become less about inherent nature and more about a cultivated ability, which is a fun shift from the born-this-way trope.