Tricky one.
I'm Wiccan - and still bump into people here who've no idea what that is.
I describe it as a modern form of Paganism influenced by Shamanic and other spiritual practices. Polythestic in it's nature.
I give them more detail if they ask for it.
That's my penny's worth - though not what you're looking for - as my practice does fit into a recognizable 'box'.