Last time I've checked, LTC developers announced the "Mimblewimble" privacy technique. I don't know if it's already been implemented since I haven't been catching up with the project's progress.
It’s still in test mode. There’s no fix date for the release. If I'm correct, I have seen it will be released on March 2022. Anyway, you can check out the update here-
https://litecointalk.io/t/mweb-progress-update-thread/26678/1And if you are active in telegram, you can join this channel for more update-
https://t.me/MWEB_Testnet