SwitchDex is one of the only privacy focused DEX in the market, constantly evolving and they just announced an update of New UI, tornado.cash integration, gas-free order cancellations, ideal conditions for bots and a downloadable version. All of this while still maintaining their complete privacy stand, actually the new tornado.cash integration would make it the most private dex out there imo.

Check SwitchDex.ag
The update - https://medium.com/@switchag/switch-switchdex-exiled-documentary-update-a714a1e5a1ee