As the Federal Reserve Bank of Kansas City prepares to host next month’s annual gathering of central bankers in Wyoming, seasoned Fed watchers from the financial markets, including the chief U.S. economists of the biggest American banks, aren’t being invited, according to past participants. Among those who didn’t make the guest list: Vincent Reinhart of Morgan Stanley (MS), Jan Hatzius of Goldman Sachs Group Inc. (GS), and Bank of America Corp.’s Ethan Harris.