Someone will have to explain to me how you can see "flying NPCs with feathery wings" and come up with Aasimar. They don't have fly-able feathery wings in D&D 5e. They have cosmetic 1 minutes wings that are either skeletal or incorporeal when using their 3rd level race ability based on sub-types.
The lady looks too much like a celestial emissary of Selûne with that armor. Despite being farther away, she looks larger than human Tav under her too which would make her large sized. I'm pretty sure she is one of the Shards of Selûne.
The Flaming Fist guard, I'm not sure. Although, I somewhat like the idea that it is a tadpole ability, but I'm not sure why Paladins would have wings when they are Oath based now.