What I do is put a number of extra spaces in front of the name on character sheets/handouts that I want to go on top, and it will organize them in order by the number of spaces. In between these I put a character sheet/handout named something like "_____" or "===PCs===", "===NPCs===" with spaces in front of those to put them in the correct order in the list. The extra spaces don't show up in the journal list when you are looking at them, but they will modify the character's macros if any of them are based on the character (which can be easily fixed by adding the spaces in the macro), or if you attach the sheet to a token, the token will have extra spaces in front of its name on the token (but you can delete those spaces too, or just hide the name).
