Since the crackdown on centralized coordinators like Whirlpool back in '24, the options are limited. JoinMarket remains the only robust, decentralized choice because it has no central point of failure.
However, 'mixing' is often flagged by chain analysis now regardless of the tool. The smartest move today is avoiding the need to mix entirely by acquiring No-KYC sats on P2P markets like RoboSats and managing your UTXOs carefully or using Lightning.