I did more research and found out who the actual rightful heir to the throne of England is.
Earlier I thought that the documentary Britain’s Real monarch proved that Edward IV was illegitimate and that therefore his younger brother George Plantagenet and his descendants are the rightful heirs to the throne of England. However I found out that other historians debunked the claims in that documentary.
It therefore means that Edward IV was legitimate and that the bill of attainder passed onto his treasonous younger brother that prevented his descendants from inheriting the throne was also legitimate.
You may think that it means that the Houses of Lancaster and York were unified when Edwards daughter Elizabeth of York married King Henry VII of the Lancasterian side. However she was the daughter of Edward and Elizabeth Woodville. Remember that Richard III seized the throne from his nephew Edward V because Edward’s marriage to Elizabeth Woodville was declared an illegitimate bigamous marriage making Edward V illegitimate.
It therefore also makes Elizabeth of York illegitimate as well.
After Richard III’s son died, he named his nephew John de la Pole as his heir who died in 1487. His brother Edmund de la Pole succeeded him as the Yorkist heir till his death in 1513. He was then succeeded by Richard de la Pole, the last Yorkist heir to pursue the throne until his death in 1525. Their other brother William de la Pole was imprisoned in the Tower of London and died in 1439.
After that, the closest male relative following primogeniture was Thomas Manners 1st Earl of Rutland as the son of Anne St Leger who was the daughter of Anne of York, the eldest sister of Edward IV and Richard III.
His descendant and heir is this guy.
https://en.m.wikipedia.org/wiki/David_Manners,_11th_Duke_of_RutlandThe good news is that he has a son 19 year old son Charles John Montague Manners who can be kidnapped, forced into a marriage, and forced to masturbate to produce an heir who can be raised to rule England.