It’s been 17 months since activist Carl Icahn started targeting American International Group Inc.’s Chief Executive Officer Peter Hancock, faulting him for the company’s sluggish returns and pressuring him to sell assets. The CEO announced his resignation Thursday after posting losses in four of the past six quarters. Here are some of the people who may be considered to replace Hancock, based on interviews with executives and advisers across the industry: Why he could be a good fit: He was previously an executive at AIG, working there for seven years through 2007. He still works closely with the insurer because...