Simulate 100 mocks with each of the top 5 mock draft simulators, transfer the outcome to an excel spreadsheet to calculate %, there ya go! Fairly simple really, although sentiments change during the weeks leading up to the draft.
As for an actual program that would do this for you? Would be a lot easier to just ask the draft simulator sites for their data. They likely have this built-in, or could easily build this feature into their current programs, and the public is routinely providing the sentiment data.
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