what i have now are Ethereum,Ripple and Binance.
i have holding Bitcoin in Majority because i trust it more than all the altcoins in the market so i am only waiting for the start of the new Hype in market.
for other alt altcoins also applies, but for now, focusing on ethereum until 2021 might be more profitable.
Bitcoin has no development like ETH or any altcoin but it has been proven to be the strongest coin in the market, so you'll never lose if you hold on bitcoin too.