With the previous analysis in mind let's see if I can't make sense of some of these interludes.
I Switched My Robot Off - mentioned as much earlier, but in the context of the album as a whole and the way it's read, robot is obviously meant to refer to the part of a person who isn't cognizant, and as such they're less likely to retain any substantial value in the fictional "party". It instantly establishes us as the figurative humans in the ongoing madness.
The Non-Conformist Oath - this is more of a pisstake and ironic joke more than anything I believe, especially the way it's placed right before Submission, a track which pretty much in the title confirms it's about "submitting" to someone, or in a way, conforming to them. One way to read into it is the audience of the party convincing themselves they're above everyone. It's also the only interlude that Ben Mendelsohn isn't narrating, so at this point we're essentially on the outside looking in.
Elevator Going Up - the least telling interlude of all, almost completely useless, but reaffirms that the narrative of the album does take place inside an elevator. Interestingly, it's the last interlude before the album essentially "exits" it's deluded observational high and mellows out with the introspective Andromeda / Busted and Blue, where 2-D takes center stage.
Talk Radio - if I'd have to guess I think this interlude and the last one kind of establishes Ben Mendelsohn's character as the elevator attendant of the party who is going up with you. Much like you he's "switched his robot off" but he's simultaneously the antithesis of the attendees, as rather than partaking in the situation he's apathetic enough to enable it. He passively comments on the events to you as someone equally cognizant, and recognizes after your brief moment of respite that you don't have to keep ascending the penthouse if you don't want to. He is, after all, doing only what the people want him to do.
Penthouse - much like EGU, establishes the location of the album, but also an acknowledgment before the chaos of Sex Murder Party / She's My Collar that nothing could stop this party from happening, and that nothing could stop it from going wrong.
The Elephant - the most "on the nose" interlude if any. The most obvious way to read into it is the Elephant as the symbol of the Republican Party, celebrating it's victory, though it could also be viewed as a double entendre for the attendance of this party that's going on in the album. Perhaps it views of it's attendants as an elephant, a powerful force that can be deceptively sympathetic. But in this case the good nature of the party has gone haywire and gotten sent into an uncontrollable stampede, and the quaintness of it being that instead of spouting water, a source of sustenance, it's confetti - indulgent but useless.
New World - the disorientating tune and the incoherent rambling of the narrator suggests something of a disturbance in order, like an after party (or in a more quaint reading, an after life). I'd say at this point even the attendant is out of his element and there's a pushback to the perpetual insanity of the party. Perhaps at this point he has no purpose, indicating that the party is over.
FWIW I recognize I probably read too much into this shit and I'm just doing this for shits and giggles.