I know there is a contestability period in which the insurance company can deny a claim for suicide, and that it’s relatively short, but I’ve been wondering if anyone who jumped, was still in that period and was denied?
While I can't prove this directly, it's extremely unlikely that any insurance companies rejected claims on these grounds. My understanding is that insurance companies follow the official cause of death on the death certificate without a lot of further investigation. If any 9/11 victims were ruled a suicide, this would almost certainly have become a scandal in the press. Journalists who have simply tried to identify some of those who fell from the towers have made great efforts and still could not identify them conclusively.