The other countries that have sought and been granted observer status to date are Australia, Spain, Uruguay, Paraguay, Guatemala, New Zealand, and Japan. They have been granted observer status. This is fairly recent. We have been an observer since last October.
None of these is yet in a position to look at full membership, because they haven't met the condition precedent of having existing FTAs with all of the Pacific Alliance members. They are not yet at the stage of doing an analysis of whether membership suits their needs, because they haven't met that one threshold.