Ethereum , xrp and Dot is best three combination altcoins that will gives you a lot of profit in the future if you buy it and hold it right now it will gives you more money few years from now.
Among those coins you listed, Dot has the greatest momentum to reach a massive high this year because most of the upcoming projects are getting building their smart contract on pokaldot, this actually is the same reason and thing that skyrocket BNB, DOT will be the most recognized coin this year if the team keeps their promises and complete their roadmap as planned.