@Aoyuki Galgalim or Ophanim are another name for Thrones.
Also Archangel is a rank, not a type of angel. They are leaders and can be of any type. Though I wouldnt count out the addition of one yet. (could even be Gun Fiend if he comes back)
Since we are at it, there's this image (not by me):
to note there's also a passage about the beast from the sea having a fatal wound on its head, that healed (remember Makima being shot in the head). There's a lot of loose religious allusions, fitting it, Chainsawman or Pochita is likely Satan/Lucifer/The devil (yes, I know they are not the same but its resumed as one by most nowadays) ,but it can be written in several ways, we dont even know if heaven really exists in this world (Hell and Heaven might even be the same place which would put CSM as god).
We are also missing the beast from the Earth, but story-wise its understanding that it didnt show up yet. (I had a theory that it would be Kobeni as devil of deception or illusions, though I dont put much weight to it). Makima could also be the demiurge, this stuff is not 1:1.
Anyway it depends on how closely to religious themes the author wants to go, but it looks like we are entering the apocalypse and I wouldnt say that the manga is ending, I think this is where the real juice starts. His previous work seemed like it would more than once too.
To note, the book of revelation which speaks of the apocalypse includes a door that once open can not be shut. (though its god that is supposed to open it)
I have a few theories as to where this will go... I think the truth of the world might be a bit more complicated than we are initially led to believe, It still bothers me a bit that the primordials are called transcendent when they dont even leave Hell. Wonder if this will be a case of hell being a meeting place between two worlds who are at war and Primordials transcend the conflict between both sides and just act as equalizers or something.
Either way, the fact that Makima got interrupted when she was about to spill the beans makes me believe that we still have a lot to find out.
@TNT261 There's no mass revive, you can see that they are "revived" pretty much in the same way that Akane was. they are more like corpses being puppeteered (well, Dominion and Seraphim seem to be alive, Princi was willingly aligned with Makima but her hair down here implies that she's no longer alive due to having been used for Makima ability). Also this is the point of a series where you might wanna wait and read it in volumes, if you are expecting full exposition in one chapter, during writing transition peak, from an author whose strength is his visual storytelling, then you are gonna have a bad time. Things are gonna be explained, but in due time