Source for that? It’s quite an open truth that Obama was a leading murderer. Not that every other US president since ww2 also would hang if they were put to the same standard as at the Nuremberg trails.
https://www.cfr.org/blog/obamas-final-drone-strike-data Obama still holds the record. Both are murderers at least we can agree on that.
Except Trump changed the reporting laws and a bunch of his aren’t reported, and your data is “estimated”. I’m going with the rapist with 34 felonies has more since that’s where the proof is.