John Gill's  Exposition of the Bible 

Jeremiah 25:24

And all the kings of Arabia, and all the kings of the mingled people that dwell in the desert,

And all the kings of Arabia,.... Of Arabia Petraea;

And all the kings of the mingled people that dwell in the desert; the other Arabians or mixed people, that dwell in Arabia Deserta, as the Scenites, Nomades, Kedarenes, and others; and so the Targum,

"And all the kings of the Arabians, that dwell in tents in the desert.''

Of these, see the prophecy in Jeremiah 49:28.