Dhampir's aren't a thing in D&D really, but Vryloka are, and they are very cool, IMHO the coolest race in all of 4e, because they were mechanically intetresting and had vampiric fluff that made them very different from Dhampirs, while playing in the same thematic sphere.
First off they were usual red heads, they could turn other humans that dead around them into Vrylokas, and they had unique twists on vampire lore, they background lore was great. I would love to see the race updated for 5e. Basically Vryloka were more living vampires like you have some MtG settings, but with a bunch of unique twists.
5e does have prototype Living Vampires in the Zendikar Planeshift Artivle, which while unofficial, was made by the developer of Guildmaster's Guide to Ravnica and the upcoming Mythic Odysseys of Theros, as well as helping to write Eberron: Rising From The Last War. Ixalan's planeshift article also had its own version of living vampires.
And there are those of us expecting a Zendikar campaign setting book connected to Zendikar Rising Set coming this winter, most likely releasing in 2021. And if that is true, we will likely get updated rules for Zendikar's living Vampires.
