Whoa! Easy, big fella. I’m not talking about shielded cables
If it's not about the shield on a STP Ethernet cable, then it's not going to be anything else.
Ethernet is either wired TIA586A or TIA586B straight through, or 586A on one end 586B on the other end for cross over.
Most horizontal run will be CCA, patch is stranded (for better strain resistance and flexibility). Save yourself the laughable argument with grain structure, crystalline structure, etc...
Ethernet is bidirectional.