Lego and other brick brands.

The LEGO Group made seven different versions of the Hogwarts Express, including the two you showed. Until 75955, none of them had steam wheels or coupling rods. The first two (4708 and 4758) had the right wheel arrangement but used non-rail wheels and had no tender. That said, all the first four sets have a proper long coach with bogies and not (TV) "Annie/Clarabel length".



Also: what LEGO thread on a model rail forum is this without the Orient Express (21344) and Disney Train and Station (71044) sets?

The first wheelchair in an official set predates the modern minifig, but they didn't appear as a single element until 2011; initially for Duplo figures.