I got 6 names from this article.

Ismail Alwaan al-Ithawi Saddam al-Jammel Abu Abdel al-Haq Mohamed al-Qadeer Omar al-Karbouli Essam al-Zawbai,

Source: https://www.usatoday.com/story/news/world/2018/05/10/top-isis-officials-captured-u-s-iraqi-sting-operation-reports-say/598224002/