There's
BEAM which as far as I've understood does what Ethereum does plus CryptoNote. That's probably what you're looking for.
Is forking a coin like monero or bytecoin the only way to create a privacy coin?
Obviously not; the existence of those two reveals the opposite. One may make one from scratch.
There aren't privacy smart contracts yet that allow creating natively private tokens
There are probably lots, excluding the one I just mentioned.