I got bored so I decided to remake those engines in that one Japanese game as if they were real sodor engines (with some artistic liberties of course) All of these engines in my head-cannon either work on parts of the island we never get to see, or miscellaneous shunting duties at random stations.
Credits to @CyanPlumber258 for the general art style (as always), and @JoshuaTheT14Class for making the Jinty model