There are some classes, like the vengeance paladin's capstone or the Tempest Cleric's 17th level Stormborn feature, that grant a flying speed to a creature.
Is this considered 'magical' flight or is it mundane flight?
I'm thinking of this with regard to the rules on falling when a creature has their speed reduced to 0 or if knocked prone:
If a flying creature is knocked prone, has its speed reduced to 0, or is otherwise deprived of the ability to move, the creature falls, unless it has the ability to hover or it is being held aloft by magic