after a ticket is purchased can the name of the guest on the ticket can be changed to a another person?

Yes!

No

Yes you have to do it on their app reservation. You can change it at the ticket window there

Yes, but best to be done before you ever arrive at the park.

I believe it can, you have to call or do it on line. I wouldn't recommend showing up at booth and asking.? Best to call

If the ticket is claimed to a Guest in MDX, it can be transferred to another Guest if not already used