Something like what Kentucky is trying to pass (linked below), or the failed house bill 2296 in Arizona.

https://fox17.com/news/local/local-dads-fighting-to-make-joint-custody-the-default

https://legiscan.com/AZ/text/HB2296/id/1457569

These bills create a legal presumption that, everything else considered equal, joint custody and equal parenting is considered to be in the best interests of the child.

Are there any states, right now, that have something like this?

Or would Kentucky potentially be the first one if it passes there?