With the exception of coins based on cryptonote codebase (which I am in the early stages of studying and learning about so I am not qualified to make statements about them)  avoid ANYTHING that claims to be untraceable or anonymous. This is a lie.  Even if the coin only connects over the tor network I can assure you it is not anonymous.  You can run bitcoin or almost any alt coin over tor and sorry: it is not anonymous.  If the people running the coin are willing to lie to you about something like this or don't know any better that speaks for their character or skill.

I think you should be more careful when making such statements specially if you are a blogger and have a reputation to preserve. The above statement is not based on expertise  I'm afraid but lacking information/knowledge.

I give you one example of one crypto-currency that IS anonymous... https://bitcointalk.org/index.php?topic=817937.0

While Bitcoin and alt coins users sync wallets over Clearnet and the Bitcoin nodes are on the Clearnet, so running the wallet from Clearnet nodes, but over Tor network, essentially does nothing (that's where your idea is coming from for fake "untraceable or anonymous").
DogecoinDark (DOGED) nodes on the other hand are binded to Tor itself, so when a wallet establishes a SOCKS connection to the dark nodes, the node doesn't know the users IP, only its own untraceable and anonymous.