I know this will take a very long time to put together and for everyone to agree upon, but I think it's time for people to start standardizing phenotypes on HUMAN cells. Every article on pubmed seems to describe a particular subset in a different way. Some articles mix populations, some are too strict and their percentages don't match up.
Perhaps we should pool what we know in our specialized fields and come to a consensus how to sequentially gate a particular subset properly.