Vampire-like Classes?

[Dr. Cliché]

Bit of a weird question, but are there any classes that can gain comparable abilities to vampires or which have some sort of connection to a vampire?

[Puh Laden]

The Undying Patron from Sword Coast Adventurer's Guide for a warlock would probably fit. Otherwise, the Fiend Patron's ability to get temp hp from downing creatures would thematically fit. Great Old One might work too.

[Aett_Thorn]

A Str-based Valor Bard might work, if you use your Magical Secrets picks for Necromancy spells like Vampiric Touch and Animate Dead. Takes a while to get there, but the Bard's enchantment and illusion spells could work well for a Vampire.

[Scathain]

If your DM allows, the Planeshift: Zendikar vampire race is pretty fun. It’s bite attack combines well with Hypnotic Gaze, the level 2 enchanter wizard ability. Even if the race is disallowed, incapacitating enemies with charming eyes gives a very vampiric vibe. Add vampiric touch spell and stir.

[Aett_Thorn]

If your DM allows, the Planeshift: Zendikar vampire race is pretty fun. It’s bite attack combines well with Hypnotic Gaze, the level 2 enchanter wizard ability. Even if the race is disallowed, incapacitating enemies with charming eyes gives a very vampiric vibe. Add vampiric touch spell and stir.

Lizardfolk would sort of work as well, with their bite attack and once-per-rest 'vampiric' bite.

[Legendairy]

I played a half elf sorcadin(conquest/shadow) and it had a nice vampire feel to it, darkness and fear! Suggestion was big on the “charm” front and most the spells were geared to feel vampirish. I modeled him after an uncommon anime vamp tho, Hellsing Ultimate’s Alucard.

[clash]

Possibly fiendlock. They have a sort of life drain

[Iden Elric]

I can't think of anything off the top of my head that hasn't already been mentioned on this thread already, but I have been considering coming up with some homebrew content to make something to fit that vibe. I think it would be really interesting for a one-shot/themed-campaign to have the party all be pseudo vampire characters that must feed in order to survive/further their goals or even gain power.
Does anyone think this would be something worth putting the time into creating?