It's still early days to answer the questions you pose. I don't know enough about the detailed genealogy of the Kinleys tested, who all live in the USA, and are the descendants of one or more 18C Kinley arrivals in the USA.

More work and time is also needed to characterise exactly what the relatively clear Y-DNA classification that these men possess means, in relation to identifying links with other Norse families of the time. There is still a couple more years at least for the study still to run, and hopefully by then these questions can be better answered.

Cheers