Blouse or Unlined Shirt Jacket.
1 has patch pockets and blouse. 2,3, and 4 have tucked shoulders and front band button closing.
1, 2 and 3 have set-in sleeves, collar and collar band. 1 and 2 have long sleeves with buttoned cuffs. 3 has short sleeves with turn-back cuffs. Sleeveless 4 has stand-up collar.