I had a mixed stash with my son - mostly BG pockets and Elementals and fitteds and wool soakers for naps and bedtime. We couldn't do pockets or AIOs for sleeping so that is why we had so many.
For my daughter, we have only really used fitteds and some prefolds. So her stash is very easy - fitteds and wool and all one brand too
Alicia, mom to Ethan 12/07 and Lillian 4/11