Thanks for the list, Garlon!
Some of the parks in the list are very doable. I'd actually already started St. George Grounds (screenshot below) and KC Exposition Park has plenty of information. I think Forepaugh Park is similarly doable, and we might be able to scratch out a few other ones.
I'm happy to try to create a generic 1800s ballpark, with the warning that it is very likely to look a lot like one of the existing ones.