I think there are a lot of Altcoins, which worth to invest, the question is when. I feel that this is not a bad time, buy some Ethereum, Cardano, Neo, ... but still, I may would wait for the market showing clear signs for a bullmarket.
It's been a long time we've been struggling hard and dips around. And those you have mention above are just having a magical trend in previous years but it seems to be difficult right now. Even with that, still we can earn profits from them and worth to invest.