It can be official, modified, or entirely homemade. What do you like about it? Is it super organized, simple and easy to use, or does it just look super cool?
Maybe not quite what OP had in mind, but I'm a huge fan of characters that are simple enough to be quickly recorded on just a sheet of notebook paper. Stuff like Maze Rats, Knave, or even some PbtA games. There's something that feels nice about not needing a special layout to surface just the "important parts."