Hi, I find your question very interesting as I´m in the same position. 

I´m just starting my path in the trading world and I already have the following investments: (very small quantities)
Waves
Shift   
GameCredits
Bitcoin   
Decred   
Siacoin

And I´m thinking of getting some of these in the future:
lisk
stratis
ico
ethereum
skincoin
litecoin
monero

Let´s wait for the experts´opinions! 
Thanks