It would be more interesting if you told us about the project. Obviously, depending on taste and cultural background, people will prefer different types of dessert. In my case, I don't like desserts at all! Tell us more. What are you trying to find out?
We don't tend to eat dessert much in this household simply because the only meals we are together for are usually our evening meal and dessert tends to have a lot of sugar in it and sugar is really not great for you especially at night. But if we do have a treat then my favourite would be a lovely sour rhubarb crumble made with coconut sugar and dairy free margarine for the crumble mix (along with oil) served with either oat cream or a dairy free almost sugar free homemade custard. It's wonderful.