Fortunately for you the list is pretty long especially since the two are derived from quite disparate progeny (neural crest vs. neural tube cells). There are probably too many to list, but a good place to start is Oligos: CC1(APC), OMgp; Schwanns: S-100{beta}, P0, Peripherin. Also make sure to use double/tipple labeling as your friend (MBP+, CC1+, S100b- == Oligo) since some of these markers may and do identify other cells in the CNS/PNS/Body