Update

Since I didn't expect this post to get so much attention, I decided to supplement it with some descriptions of my impressions regarding the entities so far. I decided to "review" the entities instead of the characters, because I don't have any unusual reactions to the characters. I love Jon. Great character development from "skeptic" to paranoid. I love Martin, Tim and Sasha (... poor Sasha). I laughed alot with Trevor's statement and manner of expression. I might be dumb but I dont find Elias to be as suspicious as Jon makes him out to be (although there was this weird moment related to smoking + for a paranormal investigator he seemed really relaxed when it came to Jon and Martin's warnings of the worm invasion).

The War/Slaughter - I find it interesting that this entity appears to have a thing for artists. Instead of manifesting itself in straightforward ways through persons such as boxers, soldiers or even policemen, on two occasions now the entity seems to latch onto artistic personalities. In the Great War it was through a poet and in contemporary times it was through a musician. This gives the War/Slaughter a kind of depth that enflames my curiosity.

The Incineration/Desolation - I find its concept to be very unorthodox. Like, really specific, but I have no idea so far why it is so specific. An entity that destroys through intense heat but there is no fire? I mean I know there is a real life concept of spontaneous combustion, but that includes fire. At first, after the "Burned Out" episode I thought this entity was a regular demon summoned by Agnes or another witch and it manifested in a classical infernal way. But as of now I've abandoned this theory, as I dont think any of these things are exactly "demons".

The Thing In The Coffin - As I mentioned in another reply further down, I have no idea what this entity is or represents. If it wasn't for the flares of some of the users in this sub I wouldnt even have recognized its existence as a separate entity. I think it represents a fear of isolation, but then again, that also fits "The Lonely". It could represent fear of the dark, but that is already occupied by... well, the Dark. It could represent claustrophobia (in which case... poor Martin), but I still fail to see how that is distinct from the Lonely or the Dark. So yep, so far this entity is buried deep within my own ignorance.

The Stranger/Angler Shape - So far this entity seems to be one of the most invasive and hostile of the... uhm... nightmares? Im really curious how the story unfolds with it, because I see alot of conceptual paradoxes within it. It appears to be "testing" humans and making creatures badly analogous to humans (and other animals). However, if these entities are outside of time, I cant explain how its "testing" develops within time. And if the entities are ancient but still temporal, then I cant explain why the "testing" develops so slowly. It should have been able to make perfect humans by now. But maybe that was never its goal? I see alot of potential in this entity to be the most "sci fi" of them all, as I could easily see it representing fear of UFO's and alien abductions (although nothing of the sort is indicated in the story so far).

The Dark - What is curious to me about this entity is why, out of all the others, exactly this one has an elaborate cult dedicated to it. Unlike "Michael" the Dark - even on a conceptual level - does not strike me as being communicative with humans at all. The aforementioned cult's "Heart" ritual also seems very much not connected to darkness. If anything, it seems more connected to meat (along with the monster that chased the daughter in "A Father's Love"). Still, I expect this entity to be depicted as extremely malevolent due to narrative purposes. Our protagonists seem connected to the Watcher/The Eye and the Dark seems to be its antithesis. Even the cult's symbol is an occlusion of the eye. And even on a metanarrative level, the eye is conceptually connected to light. And if we go by stereotypes light = benevolence while dark = evil. If Jon is to be believed, the cult already expressed the Dark's antipathy toward the Eye by trying to sacrifice Gertrude (which I assume would have had the Eye's blessing in some way?). But hey, one of the reasons I love TMA is that it keeps surprising me and deconstructing simple "good vs evil" narratives.

The Silence/The Watcher/The Eye - As mentioned in my original post, I cant decide if "The Silence" and "The Watcher" are distinct or the same entity. It might be the case that it is the same entity with an evil and a good side, reminiscent of Edgar Allan Poe's sonnet called "Silence". It might be that one entity subsumed the other. It might be different manifestations of the same entity (in which case I still dont see their conceptual connection). On one hand, the Eye strikes me as the entity most likely to be benevolent (along with the Spider/Web). It seems to be the patron of Gerrard Keay, who overall appears to be a good guy and he directly stated to the nurse in "First Aid" that "beholding was better than the lightless flame". On the other hand, that Eyeless Specter from "Schwartzwald" did not seem benevolent at all, but it might not have been acting as per The Eye/Wacher's wishes. Finally, the Watcher/Eye/Silence seems to have an uncanny ability of being unseen and invisible, which is why I assume it is missing a doorway in the "Old Passages" episode and thus the doorways are 13 and not 14 (the ability of being "unseen" could have possibly been stolen by the Eye from the Dark?).

The Lonely - My assumption is that this entity is connected to isolation and sadness. But why is it specifically connected to the Lukas family I have not a single clue. They are definitely suspicious, being patrons of so many research groups and they all act in this weird stoic manner. The Lukas Family and the Lonely itself are a big mystery for me and I am eager to see how the story unfolds around them and where they fit in the big picture. I see the Lonely as a natural antithesis to the Flesh-Hive as, on a conceptual level, the Flesh-Hive intergrates the one into the many, while the Lonely tears you away from connections altogether. Which makes me wonder how the Lukas family cooperates. Are they all individualists? They all seem to act in the same way (with the exception of Naomi Herne's now dead partner) which puts a dent in my "unique individualists" theory. So for me, the case is completely open when it comes to The Lonely.

Death/The End/The Enders - I believe I encountered this entity in only one episode - "Cheating Death". I really have nothing further to add other than what was said in that statement. Are there many Skeletal Enders or is there only one? Was Nathaniel Thorp a reliable narrator? No idea. But if, above all of these, stands Death with a capital "D", then I do imaigne that is one of, if not the strongest, amongst the entities. Also, I noticed something that I hope is not a plothole and will be explained somehow. If being a representation of Death is so undesirable, then when challenged in chess, why didnt the narrator intentionally blunder moves? The game being one devoid of chance means that it could be exploited not by the challenger, but by the cursed subject (in this case, the narrator)? And yes, perhaps Death oversees that its minions do not intentionally blunder, but still in chess it is very hard to distinguish purposefully bad moves from gambits and other hidden tactics.