Investors looking to supercharge their portfolios often benefit from a broader stock search. One simple way to do that is to look at year-ahead earnings forecasts. Our picks for the seven best stocks for magnificent earnings growth include Renasant (RNST) and Kyndryl (KD) — stocks far less obvious than Meta (META), Amazon (AMZN), Netflix (NFLX) or other megacaps that dominate…