Digibyte may be a small coin but it has it aims to be used by actual people, in gaming, online stores, tips, real life applications, it's trying to actually get people to use it and be much more user friendly than Bitcoin. I agree with Ripple, it is something I'm not interested in but I can see how it can be appealing in the corporate and banking world. Doge is just p&d as you said.
EmerCoin is a another great project indeed. I feel that Bitcoin couldn't make the jump to real world use, it is mostly all speculation and nerd stuff, even if it was in a small niche, it couldn't become the standard for anything. For example gambling, Bitcoin should be the best option for online gambling since users won't need to enter credit card or bank information, easy to withdraw, etc. But even if it has some great options it's just didn't catch on. There are many other examples and uses like this that could be cited.