I believe in the following coins that are still highly undervalued in my opinion and are likely to grow a lot in value one day: Aeternity (if they will be able to deliver what they promise), Ardor (if they will be able to deliver what they promise), Nem.
Maybe also Cardano's ADA, but im still suspicious with that one.
Cardano seems to be a very promising project and seems to have a great team behind it, trying to implement an effective idea that has a market in crypto space.But honestly many who doubt including me, let alone plus with posts that do not support it
The answer we can see later in the future.