actually I lied lmao. Listening to these again, only the flying sound effects were windows noises.
The voices are text to speech. and then most are random sounds that just got delayed and slows to hell and back. This is when I was heavily experimenting with glitchy noises. So It'd make a lot of weird, glitchy, harsh noise sounds and then try to calm them down with reverb and delay. I tried to get a lot of ambient sounds out of glitches.
I do have a bandcamp where I play with some really weird sounds there!
https://lettersfromtheschumannresonance.bandcamp.com/album/visitant-on-channel-4