Great thread.
5. Jimmy Carter - Four years as president and not one war. Into his 90's a worker for better things in the world, health and political. Helped wipe out a major disease in africa that killed millions.
He also publicly quit a xian church for being misogynistic.
I would add Matilda Gage, who acted fearlessly for civil rights of women, American Indians, slaves and atheists. Because of the latter, the other major women's rights activists shunned her, and history was rewritten to not give her credit for her own acts.
She was also an employed writer in an era and culture that did not permit women to be educated and employed. She encouraged her son-in-law's writings, which included The Wizard of Oz.
She was willing to change her viewpoint. She had been involved in something offensive to the local tribes. She apologized and made amends, eventually receiving their forgiveness.