I don't know anything about the other men. I don't know if Andrew had an affair while married to Sarah - he was away with the Navy a lot of their marriage. I doubt that Edward has had an affair. I don't believe that William or Harry has had affair!
I don't know about the Gloucesters or the Kents - do you? But listen, you go on, reveal what you know lol!!
Edward VIII I know was a prolific haver-of-affairs. His mistress Alice Keppel was Camilla's grandmother. I don't know about the monarchs in between. I don't think George VI was ever accused of having an affair. Edward VIII was known to be a womaniser but I've never heard of him cheating on Wallis when they were married?
I don't believe that PP had any other children. It would have come out long before now.
But go on, enlighten us with your superior knowledge!