I am related to ALL 45 presidents, all monarchs of England and Scotland, and nearly all monarchs of Ireland, Norway, Denmark and Sweden, and most of the monarchs of mainland Europe, including Russian czars/tsars, Holy Roman Emperors and Roman emperors and caesars; and I have my verified GENI lineage to every one of them. However, I have virtually no idea how to post them all here. I've never seen a genealogical site set up like this. This page alone is so busy I have no clue what to click on. Took me about five minutes just to locate the COMMENT tab to post this message. LOL.
I am also related to some of the first ladies and vice presidents; as to the others, I haven't researched them yet.