Well for sake of talk on races, how about little cat people?

Their tallest range around 4 feet. You can figure out their name yourself. https://i.pinimg.com/originals/b1/95/0e/b1950ef7389629021f0047eae4169b70.jpg

There are also standard races like elves and dwarves if you're going to include orcs, but I suggest giving those three more thought in order to make them more unique.