Comm bloc mystery slings - help ID?

I've never seen slings exactly like the two in the top positions. Anyone ever see slings like this before? Any idea what firearm(s) they are made for? What Country?

The top 2 are the mystery slings, adjacent to 1 PPSh sling, and then 4 SVT40 slings.
https://www.milsurps.com/images/impo...0abf7064-1.jpg
https://www.milsurps.com/images/impo...19ffed33-1.jpg
https://www.milsurps.com/images/impo...64039c73-1.jpg
https://www.milsurps.com/images/impo...6c1b9669-1.jpg
https://www.milsurps.com/images/impo...b67fa925-1.jpg

Any idea what these slings are for?
https://www.milsurps.com/images/impo...1465ff73-1.jpg
https://www.milsurps.com/images/impo...ef7f6dc9-1.jpg
https://www.milsurps.com/images/impo...2f2a0f24-1.jpg

SKS slings, maybe?

Yeah, and/or AK47 they would work.

Most SKS and AK slings use a metal clip at the front. The later Chinese SKS slings are the only ones that don't, to my knowledge. These are also quite a bit shorter than SKS/AK slings.

Someone on Gunboards suggested that they might just be a production variant of the PPSh slings, but I'm hoping someone has seen some like this before.

I've been searching online for images of similar slings and have not been successful, yet. I'm sure there must be more like this somewhere!

Thanks for the replies!

This is the closest I can find. It's for the SVT hope the link works.
SVT-40 Sling