As I state above, thou & thee still are used in a few places such as northern England.
“Ye” certainly is – very common still, and in some dialects such as Scotland and Ireland, it has supplanted you in traditional speech.
Properly though, “ye” is to “you” what “me” is to “I”.
* He told ye/he told me (accusative, as object)
* O ye of little faith (vocative – directly addressing someone)