I still have a lot of USDT in my wallet, I already have ROSE, NFTb, TRX, AXS. My question is any other altcoins that I have missed or should check out?
You missed BNB and ETH, two of these should be in your bag if you are looking for more altcoins to HODL especially for long-term purpose hodling. Due to how high the popularity are for these two and how the projects used BNB in this example for everything in their platform so that's a plus for Binance and BNB in particular. You could go for more, but I'd stick with these two.