The evolutionary links between Bitcoin and scrypt based currencies like Dogecoin are actually quite complex. A simplified explanation is this: Most scrypt coins are based on Litecoin which was based directly on Bitcoin in order to eliminate bugs introduced by other developers and to benefit from the latest code updates which coblee would then merge into LTC. However, the scrypt PoW part was derived from Fairbrix which was an identical copy of Tenebrix but without the premine. Tenebrix (and thus also Fairbrix) was based on Multicoin which was itself based on Bitcoin. Multicoin was buggy and ended up being a failure so coblee's decision to base LTC on BTC was a very good one.
I guess if you really wanted to be really technical then the direct ancestors of Bitcoin would also probably count. Out of these, Hal Finney's RPOWs was the only one that was actually implemented in software though.
Also, it's probably debateable whether or not the centralized currencies in your examples are actually coins since they are/were probably nothing more than entries in a centralized database.