Well I do think there is alot of coins that are showing profits in this 'bull run'. We do not know which coins will give us big profits.
But for me I like to invest in coins in the top 10 for the marketcap. Ethereum is always a good alt coin if we want to add to our crypto portfolios.
New coins are emerging day by day and it become difficult to select a profitable coin and everyone is in trouble and wish to not choose any scam project. During such situations only top coins can make you profitable and you can avoid scam project if you trust top coins more often than new one.
Among altcoins bitcoin is truly a trusted currency and one can choose altcoins without any doubt of success but there are also some other altcoins like BNB and Solana which shows greater success and selection will be more profitable for coming halving.