the beset promising project is bitcoin! the other are just copy/paste with some modifications.

Finding a coins with same impact is practically impossible.
I made an analysis some time ago here
https://www.publish0x.com/bitbollo-cryptocurrencies-blog/a-depth-analysis-of-bitcointalkorg-speculation-thread-the-ne-xpnnjwq
taking in account 1000 predictions made in https://bitcointalk.org/index.php?topic=2106360.0 this topic "The next 100x-1000x coin?" .
What was the result? Easy!
 
56% of coins suggested had a negative results.... from this number only 1% had a moderate loss.
11% of coins are literally dead.
13% of coins have a positive results but no one coin has realized a x100.

So yes there are promising project but isn't easy to identify, and in some cases the same coin suggested in a different timeframe has earned a negative return... or just a moderate return.
Mine suggestion? Knowledge! Is the only "coin" you need in this life