John Childs: Childs is the founder and CEO of private equity firm JW Childs Associates. In 2006, Boston Magazine placed the "notoriously media-shy" magnate—a.k.a. "the Republican ATM"—among the city's wealthiest residents, reportedly worth $1.2 billion. Childs donated $750,000 to outside political expenditure groups in 2010. He's also been involved in Florida wetlands conservation efforts.
The Cortopassis: Dean "Dino" Cortopassi and his wife, Joan, hail from Stockton, California. This article, which identifies the pair as philanthroposts, calls Dino a "wealthy self-made agribusinessman who is Stocktonian of the Year for 2005." He is suing the state of California for its failure to dredge streams in the Sacramento-San Joaquin Delta.
Joe Craft: Joseph Craft is president, CEO, and chairman of Alliance Resource Partners, a coal company based in Tulsa, Oklahoma, that gave $2.4 million to outside political expenditure groups in 2010. His family is reportedly worth $1.9 billion.
Richard DeVosThe DeVoses: Rich and Helen DeVos hail from Michigan. The cofounder of Amway and owner of the NBA's Orlando Magic, Rich DeVos is reportedly worth in the ballpark of $4.2 billion. The Richard and Helen DeVos Foundation funds conservative Christian groups such as Focus on the Family. The DeVoses are big enough political donors to have their own profile at OpenSecrets.org.
More at link:
http://motherjones.com/mojo/2011/09/koch-brothers-million-dollar-donor-club