No there hasn't.  There has been one and only one.  Since you are mentally challenged people played pranks on your by linking to threads of coins launched months (and in one case a year) before NUG saying "look another one copied you".

You do realize that posts have timestamsp and you can verify yourself that the coins which "copied you" launched before your copycat scamcoin. 

BTW at current Bid the valuation of all NUGs in circulation is ~1 BTC.   99% of that is the premine and thus not earned by miners.  Quite the "miner's coin".