I have to admit I've never heard of golem, but the other ones I'm somewhat familiar with.  As far as practical uses go, I'd say monero offers a lot more privacy than other coins but I don't know if it actually gets used for anything practical.  Since I've never owned any monero, I'm not aware if you can buy anything with it.  Same goes even for coins like Eth.  Being able to purchase goods or services with a coin is probably the most important measure of practicality in my opinion.  True, Eth does offer the smart contract functionality, but that really hasn't been used for many real world purposes other than creating scam tokens.

How about doge or litecoin?  There are merchants that accept those coins for payment, and they're even sold at some bitcoin ATM's.  They might not be as popular as coins like Eth or monero, but they do get used more for commerce I think.

By the way, I'm curious as to what siacoin, iota, and ripple are really used for.  Anything other than trading?