Most of these are cataloging errors for authors who may or may not have a Jr. in their name.
#1 Daniel Thomas, Jr.
#2 Cid R. real, Jr., author of Sunbreaks
#3 Darrell Forsythe Holmes, Jr., author of A Defense View of Texas Criminal Law
6. Outcast (Prima's Official Strategy Guide) is by Joel Durham Jr.
13. Millemondi Inverno 1999: Dimensioni vietate is an Italian anthology with works by P. Kettridge Jr., Frederic Brown, and Stefano Di Marino.