An Aasimar may have two vertical lines happening their again near their shoulder blades as if there use to generally be wings there.
– Victor B Commented Mar 30, 2019 at seven:22 \$\begingroup\$ @VictorB in 5e's https://crithitceramics.com/mastering-the-aasimar-cleric-a-guide-for-tabletop-gamers/