Much about billionaire philanthropist MacKenzie Scott’s giving remains a mystery. : Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in Much about billionaire philanthropist MacKenzie Scott’s giving remains a mystery, but those receiving grants from her recent open call for nonprofits do offer some insights, experts say. Scott's grants, announced in March, largely fall in line with her usual themes — with equity and justice, education, health and economic security and opportunity being the largest categories.