Rey Mysterio Jr has been one of the best cruiserweights during the Monday Night Wars so he belongs on the list. Rey, Juvi, Psicosis belong on the list because they made lucha libre popular to the american public. As for the "British" wrestlers they belong if and only if they worked for WWF or WCW.
Shocker
Great Muta
Tajiri
Terry Funk
Arn Anderson
Tully Blandard