Cast iron horse and carriages

I found these while out cruising yard sales a couple weeks ago. I know nothing about old cast iron toys. They are very heavy and roughly cast. They all appear to have been repainted at some point, but I could be wrong about that). I’ve scoured over them and can’t find a single mark on any of them. I was wondering if someone could tell me a little bit about them and if they’re desired by collectors. I know it’s probably a long shot since there are no markings to go off of but this is the first pond I’m diving into trying to find out some information on them.