A reliable method to find ISI journal

Hi everyone.
i searched in internet and all i found was that we have to search the name of journal in “https://mjl.clarivate.com/” and if it indexed as : SCIE or SSCI or ESCI then the journal is indexed as ISI journal.
but i wanted to submit my paper in “https://academic.oup.com/painmedicine” and I searched it in Clarivate and it said that it is indexed as SCIE . but when I emailed to the editor of pain medicine journal he said that their journal is not rated or indexed as ISI.
Now I am very confused that which journal is ISI?