A couple of those look not bad.....at least from this angle.
I'd work one of them down to see how far in those checks and bug holes go and then see what you have left. I think the one that is 3rd pic from the bottom looks fairly promising.
That billet on the left looks wide enough for a couple limbs.....I'd say come over and we'll whup one up, but it may be a bit too far for you to travel :D
Pick one out, start reducing the back to one useable ring, and then post pics again when you have it closer. Seal the back with wood glue or the like as soon as you get it trimmed down....I have had osage check on the back of a freshly exposed ring even when it was "fully dry". It was "deep south" dry, but my RH here is a lot lower than that normally.
Luck
Darcy