Delving into OSR videos on YouTube has me intrigued by the idea of racial classes for non-human PCs. Are there any good conversion for Elves, Dwarves, and other races to racial classes? Also, monstrous races like Centaurs, Minotaurs, and Bullywugs that can be turned into PCs interest me. What do people think of the idea? How does it work with multi-classing in a 3.X game?