LTC is indeed one of the old coins. Not long after Bitcoin appeared, then LTC came as an alternative. Maybe if I'm not mistaken, LTC came before Ethereum. However, LTC is out of competition with Ethereum, so it is rarely discussed. I also rarely use the official LTC platform. If I buy LTC, I will keep it in an exchange wallet.
If I reread the history on coinmarketcap. Based on their data in 2013 there were only 7 coins, one of which was LTC. Ethereum is not there, it may not register or it is not yet born. https://coinmarketcap.com/historical/20130428/