Rather than create a playable race for a bunch of different undead (which would have been cool honestly) 5e has created a catch-all term for all sorts of undead as a single playable lineage. Dig your way out of your grave and avoid the angry villagers as we go through everything you need to know. You could be raised by necromancy, cursed to walk the earth, a resurrection gone wrong, or a spiritual husk with some serious adventure-based unfinished business. Rather than specifically ghosts, zombies, or skeletons, reborn cast a wide net over any sort of not-dead you can come up with.
Death isn’t the handicap it used to be, and you can still haul your dead carcass off to the next adventure as a reborn! Newly introduced in Van Richten’s Guide to Ravenloft, 5e players can customize the undead monstrosity of their dreams and unleash them into their next campaign.