I bought a house a few months ago and I'm still trying to figure out all the wiring. I found these coming out of a cabinet in the kitchen.
I think (?) the black one is a cut-off coax cable. There's a LOT of coax in this house, so that seems straightforward (but I would still love if someone can confirm!)
I'm not sure about the other ones. They don't look electric, as I'd expect electric to be black + white + copper, like the rest of the house.
There is supposedly a speaker system in the house (I see speakers) but I haven't figured it out yet. Could that be power for the speakers? I'm not familiar with speaker wire setup. If it's speakers, why would there be so many wires?
Quality is enough for the 2-wire speaker cables. The coax cable makes sense from the photo, but I personally I wouldn't have figured it out from the photo. Seems like a lot of ideas from the left-most cable but it seems too broad to be ethernet and especially telephone. It seems like power, based on width, but difficult to tell without a more direct view of the cross-section and preferably cutting some of the outer-most shelling to see the inner colors
EDIT: I disagree that the black and red colored frayed cables are power. Those colors are most frequently speaker colors AND frayed from being forced into speaker ports. You don't normally get fraying like that from power-related components (e.g. power outlets).
Thank you all! With a bit of testing, I've confirmed that the gray ones are speaker wires.