There are many choices of altcoins available in the cryptocurrency market, but to get the maximum profit, we must really choose altcoins that have the potential to increase in the future. and if I see from the list you mentioned then I suggest to keep holding ETH, SOL, AVAX, MATIC, ATOM, and SAND. because this altcoin has a brighter future and we can make it as a long-term investment. and apart from what I mentioned then you can remove it from your portfolio list.
You've summed up the potential tokens from the list above, but I'm updating the portfolio for ETH, Matic, and Sand. I think three coins are enough to hold it long term, but there may be additional new coins during market trend review.