Was in MIA for a recent conference. I believe we came into G from SFO but flew out of H to EWR. Was a long hike to H14 for the EWR flight, but H is the only pier besides an AA one which has Pre-check, and several groups of piers, such as G and H, aren't connected airside IIRC.

It seemed from the signage that H-14 is a gate typically used by AC flights.