I've broken it down, so far there have been 4 leaders of ISIS.

1) Abu Bakr-Al Baghdadi killed under President Trump on 26 October 2019.

2) Abu-Ibrahim Al-Hashimi al-Qureshi killed on 3rd February 2022 under President Biden.

3) Abu-Al-Hasan Al-Hashimi al-Qurashi announced dead today by ISIS spox.

4) New leader announced today Abu Al-Hussein al-Hussayni al-Qurashi