It's really hard to keep a track of it as most of the projects just disappears after getting some funds from ICO or else just fails to survive post ICO. I don't think we will ever see a list of successful projects unless we start our over research as one cannot rely on ranking sites anymore as a proof about project's outcome.
Right.
There is no rankings since some of them had been successful just because of a hype.
It is just better to look at CMC.
You are looking for successful ones so they might have been listed already at some exchange.
Once that happens CMC might also list it.
But to get the full view of every altcoin who went from ICO or IEO, that is freaking lot of work.