By John McCrank NEW YORK (Reuters) – Wall Street and investment firm leaders have been prominent in the list of top individual donors ahead of the U.S. midterm elections, with influential megadonors growing as a percentage of overall contributions, according to OpenSecrets. Most of top donors this cycle are the same people who have topped political contribution lists in past years, with a few exceptions, including cryptocurrency billionaire Sam Bankman-Fried, who has emerged as a major Democrat supporter, and his FTX co-CEO, Ryan Salame, who backs Republicans, the data show. Bankman-Fried on T…