What are the Top 5 Cryptos and what do they do?

According to Coin Market Cap, the top 5 crypto coins by volume are:

BTC - Bitcoin
ETH - Ethereum
BCH - Bitcoin Cash
XRP - Ripple
LTC - Litecoin

According to Bitcoin's website, it's tagline is...

"Bitcoin is an innovative payment network and a new kind of money."

A further description is, "Bitcoin uses peer-to-peer technology to operate with no central authority or banks; managing transactions and the issuing of bitcoins is carried out collectively by the network. Bitcoin is open-source; its design is public, nobody owns or controls Bitcoin and everyone can take part. Through many of its unique properties, Bitcoin allows exciting uses that could not be covered by any previous payment system."

According to Ethereum's website, it's a Blockchain App Platform, it's tagline is...

"Build Unstoppable Applications"

A further description is, "Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference. These apps run on a custom built blockchain, an enormously powerful shared global infrastructure that can move value around and represent the ownership of property."

According to Bitcoin Cash's website, it's tagline is...

"The Best Money in the World"

A further description is, "Bitcoin Cash brings sound money to the world, fulfilling the original promise of Bitcoin as "Peer-to-Peer Electronic Cash". Merchants and users are empowered with low fees and reliable confirmations. The future shines brightly with unrestricted growth, global adoption, permissionless innovation, and decentralized development."

According to Ripple's website, it's tagline is...

"The world’s only enterprise blockchain solution for global payments".

A further description is, "Ripple connects banks, payment providers, digital asset exchanges and corporates via RippleNet to provide one frictionless experience to send money globally."

According to Litecoin's website, it's tagline is...

"Global Decentralized Currency Based on Blockchain Technology"

No further general description, it gets into specifics of their wallet, how you buy litecoin, how you spend litecoin, development and community.