any case it is necessary to do the work, and it is possible to even intuitively define prospects for the future of this or that investment. At least we should make a profit, although for the time being we will forget about the excess profits.
But you did not mention the most profitable crypto to buy right now. I think the most profitable crypto is the one which has low price and stable values. The demand factor is also important in the market and the more a crypto is demanded, the more it will get profitable in future. Having said that, I can only think of Bitcoin and ETH for long term investment with good returns and Ripple and Litecoin for short term profits.