[JimR]

Unfortunately the attachment loaded as computer garble...

I’m of the understanding that:
-cat 1 is roughly 4” closer together than cat 2
-cat 0=3/8” dia
-cat 1=1/2” dia
-cat 2=3/4” dia
-cat 3 is 1” dia

I’m curious about weights?

Maybe it’s best to get a cat 2 quick hitch so long as I’m still able to pickup cat 1 implement.

There is no weight spec involved in the hitch categories.

Perhaps this link will work better for you.

https://www.tractordata.com/articles/technical/threepoint.html