#1
John Lennon. Musical talent aside, the way he treated his ex wife and Julian is appalling. And people let him off far too lightly for the break up of the band, blaming it all on Yoko Ono. He was a grown a*s man who could think for himself.
Not that Yoko is any better. She couldn't be bothered to lift a finger or contribute a single cent towards Julian after John's passing. She inherited John's entire estate worth an estimated $800M at the time of his death. A million would've meant nothing to her, so she obviously was being needlessly petty and spiteful.
On the other hand, Paul looked out for both Julian and his mother. When Cynthia put John's old love letters up for auction because they needed money, Paul bought them and gifted them back to her. He's a class act who deserves his celebrity recognition.