So this was the first time (i think) anyone got a preemptive pardon, the actual warrant on the DOJ website says what it says.. https://www.justice.gov/pardon/media/1385756/dl?inline

Will have to crunch through the offenses in the db and see if anything else like this shows up.

Preemptive meaning they hadn't yet been convicted. Nixon was pardoned by Ford in this manner (for "all offenses against the United States" between Jan. 20, 1969—Aug. 9, 1974). Carter preemptively mass-pardoned draft dodgers, etc.