The second is what I believe to be a Tom Thumb. It's like a snaffle in the middle, with the shanks on the side. I'll never use this, I looked up Tom Thumb and it's the bit that contradicts itself.
The third is really odd. It's a THICK mouthpiece, with a tiny little port (if I remember correctly) and teeny little shanks. What would I use this bit for? I don't think it would even fit in my horses mouths. O_o'
I'll try to get pics of it today. My computer and my camera don't like each other x-x