Other beside the Ammonites] better (with LXX), 'some of the Meunim' (or Maonites): cp. 2 Chronicles 26:7 and Judges 10:12. They seem to have been the people from Mt. Seir mentioned in 2 Chronicles 20:10; 2 Chronicles 20:23.
Related Commentaries of 2 Chronicles 20:1
2 Chronicles 20:1
1 It came to pass after this also, that the children of Moab, and the children of Ammon, and with them other beside the Ammonites, came against Jehoshaphat to battle.