Different types of Thieves–Shaikh Uthaymeen describes them……
In The Name of Allaah, The Most Merciful, The Bestower of Mercy
The difference between السارق المنتهب المختلس الغاصب
 As-Saariq: He does not make himself apparent–neither in the beginning of the affair (i.e. the theft) nor in the end.
 Al-Muntahibu: He makes himself apparent in the beginning and at the end (of the theft) but he does not take anything by overpowering (the victim); rather he snatches.
 Al-Mukhtalis: He is like the Al-Muntahibu, except that he hides himself in the beginning of the affair (i.e.the theft).
 Al-Ghaasib: He is like the Al-Muntahibu, except that he takes away something by overpowering (the victim).
[Source: Al-Muntaqaa Min Fawaa-idil Fawaa-id of Shaikh Uthaymeen, page:132]