And, in one unusual case, there's a Medium creature with a speed of 25 feet – the DnD Dwarf. While the link is inconsistent in the 2014 rules, it's been erased entirely in the newer Player's Handbook.

View Portrait of a dwarf with a rose and a fan (1618) By Nicolaes Eliasz. Pickenoy; oil on canvas; 109.0 x 92.0 cm; . Access more artwork lots and estimated & realized auction prices on MutualArt.