The question is a bit of a misnomer. Economic growth was much stronger during, for example, the wild, wild west days. But, is Trump the best economic growth president in the modern era (i.e. since 1980?)? The IMF seems to think so.
How could one tell that the IMF thinks this? Well, look at what their growth forecasts are for Trump, and compare to growth figures for the first year of other U.S. presidents.