The ones pictured are all Larva Lace and cross stitch floss. I have used other flosses/lace in the past too but nothing seems to work as well with smaller jigs/flies.

Larger jigs, I also use craft lace/rexlace. Makes for some interesting patterns but I don't tie with it on sizes smaller than 1/0. Too stiff to work on anything smaller and make it look right.