יהוה - YHWH and Enochian Angel's names both lack the vowels and this is their only common ground. ( other than Divine connection)
To pronounce the name of God was forbidden and it was only pronounced once a year, by the high priest, on the Day of Atonement.
Yahweh is the more correct pronunciation yet it means "He who was and is and always exists" so gives no more clue than Hashem or Adonai.. Some kind of replacement of the true name.
Tetragrammaton means consisting of four letters. We can't even be sure that "4 letters" are YHVH even. Whether originated from the real name or again derived from another construct. Today they say Adonai, (My Lord) , or Shema (the name). Elohim ( means Gods or God) So someone may come up with another 4 letters that he choose among those names or their end combination.
Tbh, whatever you pronounce as long as you mean the God Universe Divine it must be OK. But not as powerful as the True name.
YHVH it's like your father saying instead of Heliona ( assuming it was your real name just for example sake ) "Honey, "love", . etc.. He means "you" but all of these are not your real name
Why that real name is hidden and somehow forgotten? It was forbidden to pronounce yes but why it was forbidden in the first place. I don't know the real reason. I may guess.
In "Balthasar's Odyssey" A novel by Amin Maalouf he tried to address that matter within an Islamic context.
In Islam God has 99 names, they are mainly "adjectives" or "qualities" of God. They mean "The greatest", "The All-knowing", etc.. Allah as a name existed before Islam and somehow seems to be derived from El. In the book, there is another name 100th name which the true name and if you have that name, your wishes are fulfilled at once. I am not sure if the true name had such potential or not, but it was sure a powerful way to create a link.
For those who are interested in the alphabet of Enochian
( though the aim of the article is to prove it's a construct still gathers valuable info )
That is a site with Enochian prayers and pronunciation
There is also a book about the pronunciation of Enochian names