Taking
Coleman (because it's a surname that I don't think works well as a fn and because there was an awful teacher with this name when I was in high school), Dashawn (because it sounds like "duh-shawn"), and Davion (because I went to school with a girl by this name).
CalebClarkColeCollinConnorDallin
DaltonDamienDamienDamionDaneDaquanDarianDarienDarinDarioDarion
DariusDarrellDarrenDarrinDavian
DavinDavisDavon
DawsonDaytonDeanDeangeloDeclanDemarcus
Demarion
DemetriusDenzelDeonDerekDerickDerrickDeshaunDesmondDestin
DevanDevinDevonDevonte
Devyn
DiegoDillan
DillonDimitriDionDominicDominickDominikDonovanDorianDravenDuncanDustin