I don't think all the mentioned coins by the OP are dead, they had great ATH and sooner they would going to set new ATH as per the time because right now people are more likely to focus on privacy and anonymity and that's why it has great future. If you wanna take the example of a dead privacy coin then it would be Ghost by Jhon Mcafee. You could compare Ghost with all these mentioned coins and you would find it out which coin is a dead one.