Part Two: Is this (Revised) Hemokatín (Lesser Vampire) balanced against all official races?

Original Post

According to someone here, my original subraces were gonna be WAY too OP. So, I changed them, as below:

(No Age or AL, or specific Size). Also, this is for D&D 5e.

Hemokatín

Ability Score Increase. Your Charisma increases by 2.

Age. Hemokatín mature faster than humans until adulthood, at 14 for them. They then age slowly, living up to 750 years old.

Alignment. Most Hemokatín tend toward chaos and good, despite their rigid hierarchical society. They love their hierarchy but also love the good and beautiful things of the world, and hate to see self-expression oppressed. Bloodlines tend to be neutral, reflecting their human nature.

Size. Hemokatín are the exact same size as humans. Your size is Medium.

Speed. You have a base walking speed of 30 feet.

Bite. You can bite living creatures to siphon blood from them. As an unarmed strike, you can bite a creature you are grappling. On a hit, you deal 1 piercing damage. When you deal the piercing damage, you also deal 1d4 necrotic damage to the target if it is not undead or construct. If you can not inflict the piercing damage, you do not deal the necrotic damage. When you deal the necrotic damage, you regain hit points equal to that damage.

If you do not perform this bite attack every 3 weeks, you go insane; You gain the poisoned condition.

Darkvision. You have superior vision in dark and dim conditions, due to your relationship with undead. You can see in dim light within 60 feet of yourself as if it were bright light, and in darkness as if it were dim light. You cannot discern color in darkness, only shades of gray.

Sunlight Sensitivity. You have disadvantage on all attack rolls and Wisdom (Perception) checks depending on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight.

Advanced Grappler. When you make checks while grappling creatures, you are considered to be proficient with the Athletics skill.

Undead Resilience. You are resistant to poison damage, and you have advantage on saving throws against poison and disease.

Light Sleeper. You only need to sleep for four hours during a long rest. You still need to perform light activity during the other four hours.

Keen Senses. You are proficient with the Perception skill.

Languages. You can speak, read, and write Common and Hemokatín. Hemokatín is a secret jargon code for the Hemokatín race remarkably like thieves’ cant.

Subrace. Six subraces of Hemokatín exist, based on their parentage: Purebloods, Bloodlines (Or Halfbloods), Elfbloods, Orcbloods, Fiendbloods, and Angelbloods. Choose one for your vampire character.

Purebloods:

Ability Score Increase. Your Constitution score increases by 1.

Chilling Grasp. You know the chill touch cantrip.

Bloodline/Halfblood

Ability Score Increase. Any one ability of your choice, other than Charisma, increases by 1.

Magic Hand. You know the mage hand cantrip.

Elfblood

Ability Score Increase. Your Dexterity score increases by 1.

Toxic Cloud. You know the poison spray cantrip.

Orcblood

Ability Score Increase. Your Strength increases by 1.

Hard Striker. You know the true strike cantrip.

Fiendblood

Ability Score Increase. Your Intelligence increases by 1.

Hellfire Orb. You know the fire bolt cantrip.

Angelblood

Ability Score Increase. Your Wisdom increases by 1.

Light Herald. You know the light cantrip.

What I changed:

  1. I deleted much of the abilities of the subraces.
  2. I weakened the necrotic damage of the Bite from 1d8 to 1d4, and changed some of the exact abilities of the Bite targeting.
  3. Reduced Darkvision to 60 feet (From 120 feet).

If these races are in anyway still too powerful, please let me know what is still too powerful so I can change it for a round 3.