While I am not going to talk about SUI or SOL, I can clearly state that XRP is not a coin to buy. Because it's heavily centralized and that is the issue, we are not going to end up getting a good price for it at all, and should eb avoiding it as much as we possibly could.
If we do that then we are going to be at the mercy of Ripple company and its owners, they are two people if I am not mistaken and whatever they do, we are going to profit or lose based on that. I am not saying they will crash it, but why risk my money by letting two other strangers dedicate how it is going to go? Their one mistake would cause me to lose money. Bitcoin doesn't have that for example, it's decentralized, if I am buying an altcoin, I want something like that.
If compared to Bitcoin, not only XRP but all altcoins cannot be compared to Bitcoin because most of them are centralized. But what we are discussing here are altcoins, which have nothing to do with bitcoin and if we compare XRP with the rest of the altcoins. Investing in it is not too bad as it is at least one of the top altcoins in the market and is more reliable than many other altcoins.
Also, if you just want to invest in projects similar to bitcoin, I can say that there is no project worth investing in because bitcoin is unique and altcoins are not for you.