I love the name
Miriam and have for years. I think anyone can use it, you don't have to be Jewish. I don't think it's too dated to use and would love to see it on a little girl these days and have, since I have a niece with this name, who was born three days after my son! My niece gets called Mim and
Mimi (mim-ee not me-me). As for combos, I like/love:
Miriam Audrey (My niece's fn/mn)
Miriam AdeleMiriam AnnabelleMiriam TabithaMiriam EllaMiriam FreyaMiriam HazelMiriam PearlMiriam LucyMiriam SadieMiriam PoppyMiriam Jane
Lila MiriamEva MiriamAva MiriamCharlotte MiriamCeleste MiriamGwyneth MiriamRuby MiriamRuth MiriamSabrina MiriamEstelle Miriam