I think it is reported somewhere that Nick Szabo also communicated with Satoshi. Hal Finney was also the recipient of the first

Bitcoin transaction, so he had to have contact with Satoshi in some way, other than the Crypto forum they talked on. The

whole secrecy around this, makes this just so more exciting. Why do you want to know? Most of this information is well

documented. {Books like, Mastering Bitcoin: Unlocking}