Albert Barnes Commentary 1 Samuel 30:27

"To them that were in Beth-el, and to them that were in Ramoth of the South, and to them that were in Jattir," — 1 Samuel 30:27 (ASV)

Bethel - That is, Bethuel (1 Chronicles 4:30), located in the far south near Beer-sheba, Hormah, and Ziklag; or Bethul (Joshua 19:4), one of the cities of the Simeonites.

South Ramoth - Rather, “Ramoth of the South country” (1 Samuel 27:10; 30:1, 14), so-called to distinguish it from Ramoth-Gilead, one of the Simeonite cities (Joshua 19:8). Shimei, the Ramathite (1 Chronicles 27:27), who was over David’s vineyards, was evidently a native of this Ramath. See 1 Samuel 30:28.

Jattir - “In the mountains” of Judah, and one of the priests’ cities, is identified with ‘Attir, ten miles south of Hebron.