ETH, Monero, Siacoin, IOTA, Golem, ripple are some of the well known coins which have a practical use. PERL coin came up with a good practice, the coin became opacity coin. What are the remaining alt-coins which have practical usage?
All exchange tokens shouldn't be mentioned here since their utility purpose (practical use) is limited to the environment of their exchange platform meaningful without the exchange, no practice use. All legitimate privacy coins has practical use as they can be used anonymously to hide the identify of our transaction. Coins like monero as you mention are sime example. I don't see the practical use of litecoin when bitcoin is functioning properly.