ADA and LTC, if the Cardano team delivers its going to be a better alternative that Ethereum and LTC is old, cheap and is quietly being used as a medium of exchange (should be bitcoin but you know... fees matter...)
LTC? Litecoin has already went up by a lot of money, it increased by more than 3000% during this year, i can not understand how are you expecting to see another huge rise from this coin.
And Cardano? It has grew up a lot, obviously that the bullish trend could continue but it would be difficult.
From $0,02 (when it got listed) to more than $0,52. It touched that mark and then it went back again, but it is slowly going up at the moment.
I dont know, for me, Reddcoin will be a giant one.
Litecoin do really have a potential to increase its value even in the past months and because of christmas, The value increase even more. I will look further on cardano if it was really a good investment but for now i am currently holding my ethcoins, The value of bitcoins is decreasing and that is the reason for ethcoins value to increase further more.