A Georgia federal judge has appointed Chicago attorney Amy E. Keller as co-lead counsel to oversee the national multidistrict litigation against Equifax.Keller, a 34-year-old partner at DiCello Levitt & Casey LLC, will work alongside co-counsels Kenneth S. Canfield of Doffermyre, Shields, Canfield & Knowles LLC, in Atlanta, and Norman E. Siegel of Stueve Siegel Hanson LLP, in Kansas City, Mo., in managing hundreds of lawsuits against the credit reporting firm.Lawsuits were filed after Equifax announced in September …