I’m biased. I have a pony, but he’s like a horse just with really short legs. Maybe 14.1, 1050lb on the scale. I think he’d probably make a crappy eventer, but I’m drifting more towards dressage land these days anyway.
Assuming clean gaits and not crazy temperaments, all 3 of these ponies would probably be VERY hot on the dressage market with some training time. Cardi made the Welsh a hot item and sport ponies are all the rage now.