I was thinking TB but he could be a Standardbred. Look for a tattoo. If there isn't one, you might not figure out what he is. I got my mare from an auction almost 3 years ago and I'm still not sure what she is, but I believe she's an Anglo Arab.
I'm going over to my dads today and will check for a tat and try and get a video of him moving. Im also going to try and call the lady and see if she has anypaper work on him like old coggins or something!. Wish me luck on that one.