Except that Prince George, his dad William, grandfather Charles and great grandmother Elizabeth II are of the House of Windsor - previously called Saxe-Coburg and Gotha but changed to Windsor during WWI as to sound less German. Possibly somewhere distantly related to some Tudors but not directly in lineage.
Diana was a direct descendant of Edward I (Longshanks). Maybe that’s where she got some of her height from. Edward I was 6’2”. Diana was 5’10”.
Kate Middleton is also related to the royal line.
According to this, Elizabeth IIis a direct descendant of one of Henry VII’s (the first Tudor king) daughters.
, the House of Windsor is descended from the House of Tudor and the House of Plantagenet - through one of Henry VII’s daughters, who married a Scottish king and whose great-grandson was King James I of England (at the same time that he was King James VI of Scotland), then through James’ great-grandson Georg of Hanover (King George I), who is Queen Elizabeth II’s great-great-great-great-great-great-great-grandfather. There are probably also other lines of descent over the centuries and generations, but these are the official ones through which the monarchy traces its claim to the throne.