I've been living in Rhode Island since 1967, and I began actively keeping up with the occult scene here around 1992 -- mostly out of curiosity, as I am something of a hermit and dislike being part of any group whatever. I never found much here of what you say you're looking for. There have been quite a few small Wiccan covens and modest occult stores (with associated small discussion and/or practice groups), but most of them have come and gone over the decades. The only exception that I know of is a firmly non-Wiccan organization of Traditionalist Witches (New England Covens of Traditionalist Witches), which has been active here in RI since the 1960s, and which has trustworthy pre-Gardnerian history in Massachusetts as far back as the 1920s or 1930s.