Which songs from Porgy and Bess became popular standards?

Several musical numbers from George Gershwin’s folk opera Porgy and Bess transcended the work's initial lukewarm reception to become enduring popular standards. These songs, which were often published separately as jazz numbers, include:

• "Summertime"12
• "It Ain’t Necessarily So"1
• "Bess, You Is My Woman Now"1
• "I Got Plenty O’ Nuttin’"12

While the opera itself faced criticism regarding its depiction of African American culture and its blending of operatic and popular musical forms, these specific compositions gained widespread recognition and helped the work eventually achieve its status as a masterpiece of American music.12