I had a meeting with Apple top tier support. We generated log files, shared my screen, etc.
During that meeting, the Optimization Search and Siri Stuck that was stuck at 92% went away - actually during the meeting. Timing is a funny thing.
So it took my phone five plus days to finish.
I asked if there was anyway to view the status, and I was told no. When it disappears that means it is done.
I also asked if turned off Siri, might that action reset the indexing. They said it may and the optimization may start again. It was unclear if the indexing would be from the beginning or some other part of the optimization.
Thank you all for your help.