I hold BTC and ETH
Certainly most people will hold both coins. But I have some good altcoins to hold like Litecoin, Tron, Ripple, Doge and XLM. Maybe that could be a consideration if you want to add to your portfolio list.
I don't understand why forum users still suggest useless altcoins for investment? I don't think there is a reason to invest in the Doge or Tron if there are projects with an experienced team and a higher level of reputation. Top altcoins are the main priority in both bull and bear markets, regardless of the newbie or pro trader.