Given how the denizens usually factor into the characters’ arcs in various ways, I’ve come to believe its possible to sorta reverse engineer at least some of the denizens of the characters we don’t know.

The ur-example here is Gamzee, who is so heavily linked to Dionysus I can’t really see another option for him.

Unless he has Yaldabaoth, which is possible since

A) Part of Dionysus’ mythology that links to Gamzee involves becoming one with Zeus, just as Gamzee becomes part of LE, and Homestuck’s mythology generally seems to treat Yaldabaoth as a symbol Zeus, Ra, and YHWH at once depending on the roles Caliborn/Dirk (rly Bro and AR here)/LE are playing at the time.

B) It seems at least possible that Yaldabaoth “replaces” the standard Denizen a player might have, yeah. (To be honest though, I’m not sure that Denizens are precisely aspect specific–my views on Denizens generally borrow a lot from @dahniwitchoflight, her conjecture on that particular system makes the most sense to me right now.)

C) Gamzee obviously qualifies for the “natural born warrior” thing. So does Equius, but due to Gamzee’s dominance I tend to assume he’s likelier to have Yaldabaoth.
Incidentally, if Equius doesn’t have Yaldabaoth, I’ve speculated he might have Orpheus, since Orpheus is at least in some places understood as a version of Dionysus, and Equius’ story seems to have some parallels to his.

Looking at canon this way it also becomes a solid guess that Terezi’s denizen was Themis, since again she’s blatantly enmeshed in her mythology.

That gives us at least one reasonably fitting denizen for Rage and Mind–Dionysus and Themis, respectively. As for Doom, I haven’t identified a particular mythological figure Sollux or Mituna seem based off other than the obvious–the Gemini twins, Castor and Pollux. But since there’s two there, I’m not sure how that’d translate to a Denizen–a dual denizen with two names would be fitting enough, I suppose. It’s also possible I’m missing some other mythological references built into the Captors, so who knows.

Don’t have anything to go off for Blood, though. Both Kankri and Karkat are fully enmeshed in Jesus imagery, all of which ties directly into Abraxas, so they don’t have any outside mythological ties to let us speculate into their Aspect’s “corresponding Denizen” specifically, if indeed such a thing exists. I’ve thought for a long time that YHWH would be a fitting match for Blood, as a “God of the covenant”. But that’s just my long-held fan preference, not any kind of serious speculation based on canon.