H15 and H16 looked alike. The NH had only 10 of this type, so not many were photographed, and photos of them in the McGinnis scheme don't help me. Atlas made a H16-44 but the NH version has a different configuration along the walkway, with the "hump" halfway between the cab and the nose. I didn't modify the Atlas to match, tho it's probably possible.
Since the NH bought both the 4-axle and 6-axle versions of the H16-44, calling up photos of that model bring up both types. Most of the online photos are of the bigger loco.