I will always choose eth, bnb, btc and Dogecoin. Those coin has give me a lot of profit from my past investment, there are a lot of good altcoins which is on top from today you can also pick them up and add to your investment list you can find them on the CMC or CoinGecko they rank the coin based on the market cap or volume choose the best coin and you'll be fine.
Those three, ETH, BNB, and BTC, will give you a lot of profit in the future, especially BTC. But I am not sure with Dogecoin as that coin already increased so high before. Perhaps Dogecoin can increase more in the future, but the situation has already changed, and many coins are trying to profit the investors. But it will not be a problem if you want to use Dogecoin for your investment.
First 3 coins are worthy undoubtedly you can investment for the long term. But i don’t think can depend with Doge coin because you know for the Doge current price Elon Musk played big game either it was not happened and it’s manipulated rising, For the future investment i will never recommend to go with Doge coin.