They are doing a poll on who is the best Vampire to Ever live and they are doing a contest on twitter. Now I decided to do my own because Zenimax's seems rather lacking and also because they didn't add in Count Janus >:( This has options for Vampires not included in Zenimax's poll including the Greymoor Vampire Lord. I added the Greymoor Vampire Lord but I'm not giving his name out here. However I will give you a couple of vague clues down below if you want to go lore digging to try and discover the name of the Vampire Lord.
The Poll options are the following.
Count Verandis Ravenwatch, Hes a Pure Blooded Vampire known for his Temperance and teaching Vampires a better path.
Lore on him can be found here.
https://en.uesp.net/wiki/Online:Count_Verandis_Ravenwatch
Count Janus Hassildor he should have been included in the Zenimax poll. But saddly was not so hes included here.
Hes an interesting fellow, being the Count of Skingrad during the Events of Oblivion, hes one of the most popular Counts. Has high Approval Ratings his people all love him. He cares for his city. Though maybe not Criminals and Vampires that give into their bestial instincts. He also is an informant for the Mages guild who knows all about his condition.
Lore on him can be found here.
https://en.uesp.net/wiki/Oblivion:Janus_Hassildorhttps://en.uesp.net/wiki/Lore:People_J#Janus_Hassildor
Lady Serana now many of you will know who this is, she is very Important to the Overall Story of Dawnguard. She is the Daughter of Lord Harkon and also a Daughter of Coldharbour. I'm sure she will be a popular choice and might win the Crown for Best Vampire in the Zenimax poll that is if Zenimax doesn't find some way to give it to Count Verandis Ravenwatch.
Lore on her can be found here.
https://en.uesp.net/wiki/Lore:Serana
Lord Harkon is the Pure Blooded Vampire Lord and Clan Father of the Volkihar Bloodline.
Lore on him can be found here.
https://en.uesp.net/wiki/Lore:Harkon
Lamae Beofang- The First Vampire, Daughter of Coldhabour, Victim of Molag Bal, The one that Sires us in game I'm sure everyone knows about Lamae. But if not here is lore on her.
https://en.uesp.net/wiki/Lore:Lamae_Bal
-R
For reasons I'm not going to spoil his name or identity but I will give you guys hints to it.
He is an already existing Lore Person, Krato's from the GoW is clue number 1, He's also responsible or went to a Town that trains......"
Vicente Valtieri
Hes a Vampire that you work for in the Dark Brotherhood questline in Oblivion. Hes also the only known Vampire to ever have a Garlic Allergy because Garlic being a weakness for Vampires isn't a thing except for him. Though it might be a very rare vampire weakness because he was also the only vampire in Oblivion to have Garlic Weakness.
Volrina Quarra/Dhaunayne Aundae/Raxle Berne
They are heads of the Three Vampire Clans of Morrowind. They are more like Vampiric Gangs then anything and they hate each other and their storylines involved killing off or stealing from the other Vampiric Bloodlines. They are clear example of Warrior, Mage, Thief dynamic.
Lore on them can be found on the Uesp.
Gwendis- Because she is a Badass Rogue who does not play around when it comes to people she cares about and I just find her cute she is one of the best npcs in Eso in my opinion.
Fennorian- Healer Vampire introduced in Unhallowed Grave who loves to eat Jam. He will also be an important part of the Greymoor Chapter He may or may not be the Ancestor of Ralof. Even though hes a High Elf and Ralof was a Nord.