The Arab League has 22 members, and none has joined since 1993
The League of Arab States, usually called the Arab League, is a regional organisation of Arab countries. It was formed in Cairo in March 1945 and its headquarters are still there. Membership has grown from seven founders to 22 members, with the latest addition in 1993. One member was suspended from 2011 until 2023 and has since been readmitted. States that attend as observers are not members.
Name them all first. Then try the harder part: sort them by when they joined.