Litecoin, Bitcoin, and possibly xrp.
Litecoin is much faster, cheaper to send, way undervalued, and will become scarce as institutions buy it up. It also is easier to evolve with a collaborating development team and foundation.
Bitcoin, due to being the first one and recognizable, being used as a store of value as insecurity with fiat increases, etc.
XRP because if it is adopted by banks, despite having billions of coins, could become a mainstream tool for banks, etc.
I know three that will definitely stay, no doubt in my mind. Its bitcoin, ethereum and bnb, why? Because bitcoin is the top one and I do not think that it will change, it will always be there, as long as crypto is crypto and people use it, I think bitcoin will always be at the top.
Ethereum will be around, don't know if it will be second or not but it will be around and big name for sure, because it is one of the most used blockchains of all time, ethereum realized long ago that people should not be buying and selling you because they just like you, it should be because of a purpose and eventually ethereums current situation appeared and now we are using for millions of tokens and defi projects even though most of them are trash.
BNB will be around because binance is a HUGE company and why would they let their token to be worthless, which is why I think it will always worth something.