There are a few other crypto that come close in privacy or even technically better in some ways (just very low adoption, not battle tested, or have other major drawbacks).

To name a few:

Zano, Beam, Grin, Litecoin(MWEB transactions), Zcash(z2z transactions), Pirate Chain(basically Zcash with default z2z txs), Ethereum Railway shielded transactions