This is not the case. GPL is the only strong copyleft license of those, but they are all free software licenses according to the FSF (http://en.wikipedia.org/wiki/List_of_FSF_approved_software_l...).

Actually, free software as defined by the FSF is any software licensed such that you can use it, modify the source, redistribute it, and redistribute changed copies of it.

See http://www.gnu.org/philosophy/free-sw.html and the (long) list of free software licenses http://www.gnu.org/licenses/license-list.html