I wish I could've seen this as a draft. It's a creative approach, and I can get behind the story (not so much the characters, more on that later), but for me, the execution was botched on a few fronts.
Alright, so the first doc I came across was for -76. I read the entire thing, and despite you making some minor changes as to not directly lift content, I couldn't tell the difference - it may as well have been copy-pasted. This goes for basically everything else aside from -055. I just read a ton of material I've already seen before!
The interviews themselves are repetitive. I got it after the first trio - I don't know if it was necessary to do a dozen when they almost all have the same material ( 1. I'm a shitty murdering prick. 2. Yes you are, and I hate you.). That was the second strike for me.
Now, all the exposition comes pouring in across the 055/unknown docs, as well as us finally accessing the basic details of the skip. It's far too much, all at once, and it's unsatisfying and comes across as heavy-handed.
I'd like to suggest, despite the current surviving status of the skip, a significant rewrite. I think the backstory of the pair, what they mean to each other and how they interact, could instead be spread through the various documents - similar to how you executed 055's. There is so much wasted opportunity to work in small humiliations and punishments to 3K, as well as retaliations from it in both the SCProcedures and description. There's opportunity to actually characterize the pair in how they act - defining them by what it is they do in the narratives instead of simply talking shit.
I think you're leaning on the interview crutch too much (MAl0 aside, that actually made sense). It seems contrived for SCPs which don't include said interviews - I think the individual articles would be stronger if they held the structure of the original.
Spreading that exposition out actually gives you more to say in each iteration of the document. It was a chore to actually access everything, and unlike (for example) the minotaur (which has literal verbatim text repeated in each iteration) nothing past the first couple felt fresh. Opening these up with more hints as to what's happened/what is going on gives readers something to hunt for and look forward to as they piece together the puzzle you lay before them. If this were the case, I'd be interested in reading every damn one to get the full experience - as it stands, I scrolled past a bunch of regurgitated content to access a few contrived, repetitive chunks of dialogue.
Downvote because I think this could have been so much better.