The big gems I know are BTC and ETH. 

Honestly, there are many projects in this space that offer great profit opportunities, and everyone will have a different approach to them. Some of the low-cap and long-lived altcoins in this market, in my opinion, have some strong upside opportunities when the trend is uptrend, but the important thing right now, I believe, is to hold onto personal assets. I am waiting for an opportunity that I think might be safer. I have a view that 2023 will be a good time to invest, but DCA BTC ETH coins is still one of the ways that I have done it in recent years.