uh

collaborative txs, coinjoins, and join market all mean the same thing.

There is no zerolink coinjoin operational at the moment.

Ark is an ecash.

Ecash is custodial.

LN privacy is complicated. Its possible to have decent privacy if you run your own infrastructure. Maybe this is getting easier...?

So no

none of those things actually solve the privacy problem at the moment.

Certainly none of them do what monero does.