eazybee
I don't think Harry looks like either side of his family, and with the royal and aristocratic families being so well documented this is unusual.
William is an Hanoverian, as is Edward; Prince Louis looks like Andrew, Princess Anne resembles an earlier Princess Royal and occasionally Queen Victoria; many Spencer girls look (ed) like Diana, Princess Margaret looked like Queen Charlotte. As for Harry, who knows?
Everyone sees something different in familial likenesses. I think looks can be passed through the generations. Here's my take on a few of them, going further back I see a young Victoria in Beatrice, on the other hand her sister Eugenie looks like her father AMW. The old late Queen Mary, (May of Teck) thoroughly put her stamp on the family looks wise. Not only, as might be expected, on her son, the late Queen's father, George V1, but glimpses of her in, Elizabeth 11, Princess Ann and Edward, plus his daughter Lady Louise. Prince Louis takes after his maternal grandfather, Michael Middleton, Prince Charlotte looks like the late Queen. William and Harry's looks are quite different, as siblings often are. William is more of a Windsor. I could see the likeness in the picture supplied by Petra, between Harry and Prince Philip (with a beard) Although facially and colouring wise I think most of all Harry looks like his aunt, Diana's sister, Lady Sarah McCorquodale. I also think Princess Margaret had a look of Queen Charlotte way back, in time, wife of George 111.
I'm sure others might disagree with my pov, as stated, we all see something quite different in inherited looks within families.