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.
yes ltc and xrp will last in 10 years, but men you cant ignore ethereum and tron. eth is king of altcoin since wayback after bitcoin created. for me ethereum will last upto digital currency will gone. invest more on eth and tron you will never regret. ltc is good also ive bought it also holding my investments .