The “Content” folder has been renamed “My Library” ... so yes files for Daz Studio for the “content” folder simply now go into “My Library”.
And yes the ones inside a “Runtime” can go into the existing Runtime folder.
Keep in mind that some items written for the programs of 5 years ago may not work in today’s programs.
Also a lot of freeware was packaged under a different set of guidelines and may need a little tlc to get working correctly.
It’s okay to post the links to the products