Thank you for your informative message.
So how I understand for example in this way
“Transaction from wallet X was made to shapeshift from BTC to ZCASH (how I know monero ar zcash are most anonymous blokchains?) address where come zcash was exchange (which dont require KYC), in Exchange Zcash was traded for example to ETH, LTC, XRP, BCH and then all these values (eth,ltc,xrp,bch) was withdrawen to wallets E,L,XRP,BCH. So it is possible from now to track these wallets addresses (e,l,xrp,bch) if we start looking from wallet X?”
For “default” people is almost impossible to track this transactions?
If you use ShapeShift with any coin, it would already be impossible for any normal "user" to detect that it was originating from Wallet X ( You), unless you get a court order to ShapeShift, in which case they'll probably release your information. ( wallet adress, IP, etc).
But if you used Zcash Zero knowledge features, no one should or could possibly know it originiated from you, not even the government.
https://z.cash/technology/zksnarks.html