The entire thread is confirmation that NOI members are Scientologists (not just Dianeticists). Members of the Nation of Islam are becoming Class V Auditors, receiving metered auditing up to Clear, doing Super Power, in at least one case the Solo Auditors Course, joining staff, etc.
The only things NOI members haven't done yet is the OT Levels and perhaps the Ls. But given one NOI member has completed the Solo Auditors Course, they will be doing the OT Levels soon.
There is no need for tells or inferences. Read the thread. There is plenty of direct evidence in this thread that members of the Nation of Islam are practicing the religion of Scientology. They stopped being only Dianeticists a long time ago.