Athmo-Sounddesign

Hay Everyone,
I’d love to hear your take on Techno-Athmos and how you create them.
I love sharp, tonal athmos like in these two Tracks:

https://counterchange.bandcamp.com/track/cambrian-seas

https://schacke.bandcamp.com/track/a-future-not-materialized-2

However, I couldn’t really figure out an efficient way to create those type of athmos myself jet. I tried experimenting with noise + resonators a bit but couldn’t quite get there.
Maybe you guys can share some insights on how you approach athmos or post some resources about it?

Thanks and Cheers!