Law360 has Meet the Attys Arguing ACA's Fate at Supreme Court, which profiles several lawyers, starting off with California's Solicitor General Michael Mongan. (See here for the sketch artist's pic!)
But please don't confuse him with Michael Mogan, recently noted in a California Appellate Report blog post here for being sanctioned over $22K by a trial court in this published opinion here by 1/3. (No further sanctions were awarded on appeal.)