Return on Character by Fred Kiel emphasizes these qualities in leaders:

Integrity: telling the truth, acting consistently

Responsibility: Admitting mistakes, concern for the common good

Forgiveness: letting go of mistakes of others and ourselves, focusing on what's right

Compassion: Empathizing with and empowering others, caring for others, committed to others' development

Summary here: https://www.leadershipnow.com/leadingblog/2015/05/return_on_character.html