Don't look for get rich quick coins.
Hold the big ones. They will not make 10x in 1 week but your investment will be safe. And in the long term they will increase much more then the hype coins.
If you want more coins to your portfolio look for the ones at the top, read the whitepapers, do your own research.
Some coins I suggest you research about: IOTA, EOS, ADA, XLM, NEO.
Also, think about increasing your ETH position.
Just my personal opinion. But, the golden rule: do your own research.