Back in 2015, another player parsed the *.conversation files to count the unique dialogue options for various character creation choices.
I was interested in an updated list for the base game and DLC, so I wrote a XML parser in Python to produce a similar report.
I also covered options that add disposition points and options that check disposition points.
FULL REPORT WITH DLC BREAKDOWN
DispositionAddPoints Breakdown
This breakdown reports the number of dialogue choices