I was shopping at Goodwill yesterday for basket for the schools silent auction in April. I make a point to swing trough the craft section as long as I'm there. Yesterday, I scored!
Ball #1 (rewound by me) seems to be a tight twist fingering weight. Very similar to Cascade Heritage Paint
Ball #2 (rewound by me) seems to be a halo-ey fingering weight. So it likely contains some mohair or alpaca. (Mohair is common in sock yarn as it lends strength and pill resistance.) Very similar to Mountain Colors Bearfoot.
Ball #3 (rewound by me) seems to be a DK weight hand dyed. It appears to be 100% wool based on a burn test.
So no matter how I slice it - it was a huge score for the $6 I paid for it!!