It depends.
Some mixers have pattern which shows you that these coins come from a mixer, but still doesn't allow to connect the input from the mixer to the output.
It's like with coinjoins. You'll always know whether the coins came from a coinjoin. But you won't know which inputs corresponds to the output.
Could you explain me about that pattern? Do you have an example of mixer with such pattern and one without so I can try it? (I assume the one in your sig is one without
)
Coinjoin is rather rare but also there, how can you see its a coinjoin and not just a wallet with funds?I know that for wasabi you can check for bc1qa24tsgchvuxsaccp8vrnkfd85hrcpafg20kmjw but thats it?
Most of the time, it's when the very recent history (1-2txs) of your address comes from a mixer. If you don't bounce your BTC from address to address after mixing the coins, the mixed transaction is so recent they'll suspect you were the person who used the mixer.
This is what i find very interesting in the first place. How many txs back you go. I man if you go back 20 TX on any address, there is a fair chance to find half the bitcoins tainted in some way. The only clean BTC is a virgin one fresh from the mint, depending on how far back one goes